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<!ENTITY legal SYSTEM "legal.xml">
<!ENTITY appversion "5.5.37">
<!ENTITY manrevision "2.9">
<!ENTITY date "March 2005">
<!ENTITY app "<application>gcalctool</application>">
<!ENTITY appname "Calculator">
<!ENTITY ldquo "&#147;">
<!-- Left Double Quote --><!ENTITY rdquo "&#148;">
<!-- Right Double Quote -->]>
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<article id="index" lang="bg">
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  <articleinfo> 
    <title><application>gcalctool</application> Manual</title>       

    <abstract role="description">
      <para>
      gcalctool is a calculator for GNOME. It includes basic, advanced, 
      financial, and scientific modes and uses a multiple precision package 
      to do its arithmetic to give a high degree of accuracy.
      </para>
    </abstract>

    <copyright> 
      <year>2003</year> 
      <year>2004</year> 
      <year>2005</year>
      <holder>Sun Microsystems</holder> 
    </copyright> 
<!-- translators: uncomment this:

  <copyright>
   <year>2003</year>
   <holder>ME-THE-TRANSLATOR (Latin translation)</holder>
  </copyright>

   -->
    <publisher role="maintainer"> 
      <publishername>Проект за документация на GNOME</publishername> 
    </publisher> 

     <legalnotice id="legalnotice">
	<para>Предоставя се разрешение за копиране, разпространение и/или промяна на този документ, съгласно условията на „Лиценза за свободна документация на GNU“, версия 1.1 или всяка следваща версия, издадена от Фондация „Свободен софтуер“; без „Непроменливи раздели“, „Текстове на предната корица“, както и „Текстове на задната корица“. Копие на лиценза може да бъде намерено <ulink type="help" url="ghelp:fdl">тук</ulink> или във файла COPYING-DOCS, разпространяван с това ръководство.</para>
         <para>Това ръководство е част от колекция ръководства за GNOME, разпространявани под GFDL. Ако искате да разпространявате това ръководство отделно, можете да го направите, като включите копие на лиценза към ръководството, както е описано в раздел 6 от лиценза.</para>

	<para>Много от имената, използвани от компании, за да отличават собствените си продукти и услуги, са регистрирани търговски марки. Когато такива имена присъстват в която и да е документация за GNOME и членовете на проекта за документация на GNOME са осведомени за съответните търговски марки, тогава имената са с главни букви или начални главни букви.</para>

	<para>ДОКУМЕНТЪТ И ПРОМЕНЕНИТЕ МУ ВЕРСИИ СЕ ПРЕДОСТАВЯТ ПОД УСЛОВИЯТА НА ЛИЦЕНЗА ЗА СВОБОДНА ДОКУМЕНТАЦИЯ НА GNU, С ДОПЪЛНИТЕЛНОТО ПОЯСНЕНИЕ, ЧЕ: <orderedlist>
		<listitem>
		  <para>ДОКУМЕНТЪТ СЕ ПРЕДОСТАВЯ НА БАЗА „КАКТО Е“, БЕЗ КАКВАТО И ДА Е ГАРАНЦИЯ, ПРЯКА ИЛИ КОСВЕНА, ВКЛЮЧИТЕЛНО БЕЗ ОГРАНИЧЕНИЯ И ГАРАНЦИИ, ЧЕ ДОКУМЕНТЪТ ИЛИ ПРОМЕНЕНАТА МУ ВЕРСИЯ СА БЕЗ ДЕФЕКТИ, ГОДНИ ЗА КОНКРЕТНА УПОТРЕБА ИЛИ НЕНАРУШАВАЩИ. ЦЕЛИЯТ РИСК ОТНОСНО КАЧЕСТВОТО, ТОЧНОСТТА И ХАРАКТЕРИСТИКИТЕ НАДОКУМЕНТА ИЛИ ПРОМЕНЕНАТА МУ ВЕРСИЯ Е ЗА ВАША СМЕТКА. АКО НЯКОЙ ДОКУМЕНТ ИЛИ ПРОМЕНЕНАТА МУ ВЕРСИЯ СЕ ОКАЖЕ ДЕФЕКТЕН В КАКВОТО И ДА Е ОТНОШЕНИЕ, ВИЕ (НЕ ПЪРВОНАЧАЛНИЯ АВТОР ИЛИ КОЙТО И ДА Е ДОПРИНЕСЪЛ ЗА РАЗРАБОТКАТА) ПОЕМАТЕ РАЗХОДИТЕ ЗА ВСЯКАКВО НЕОБХОДИМО ОБСЛУЖВАНЕ, ПОПРАВКА ИЛИ КОРЕКЦИИ. ТОВА ОТКАЗВАНЕ ОТ ГАРАНЦИЯТА ПРЕДСТАВЛЯВА СЪЩЕСТВЕНА ЧАСТ ОТ ТОЗИ ЛИЦЕНЗ. НЕ Е РАЗРЕШЕНА УПОТРЕБАТА НА КОЙТО И ДА Е ДОКУМЕНТ ИЛИ ПРОМЕНЕНАТА ВЕРСИЯ НА ДОКУМЕНТА, ОСВЕН ПРИ СПАЗВАНЕ НА ТОЗИ ОТКАЗ ОТ ГАРАНЦИЯ; И</para>
		</listitem>
		<listitem>
		  <para>ПРИ НИКАКВИ ОБСТОЯТЕЛСТВА И ПОД НИКАКВА ЮРИДИЧЕСКА ОСНОВА, НЕЗАВИСИМО ДАЛИ Е В НАРУШЕНИЕ (ВКЛЮЧИТЕЛНО ПРИЧИНЕНО ОТ НЕБРЕЖНОСТ), ДОГОВОР ИЛИ ДРУГО, АВТОРЪТ, ПЪРВОНАЧАЛНИЯТ АВТОР ИЛИ КОЙТО И ДА Е ДОПРИНЕСЪЛ ЗАРАЗРАБОТКАТА, ИЛИ КОЙТО И ДА Е ДИСТРИБУТОР НА ДОКУМЕНТА ИЛИ ПРОМЕНЕНАТА МУ ВЕРСИЯ, ИЛИ КОЙТО И ДА Е ДОСТАВЧИК НА КОЯТО И ДА Е ОТ ИЗБРОЕНИТЕ СТРАНИ, НЯМА ДА БЪДЕ ОТГОВОРЕН ПРЕД НИКОГО ЗА ВСИЧКИ ПРЕКИ, КОСВЕНИ, СПЕЦИАЛНИ, СЛУЧАЙНИ ИЛИ ПОСЛЕДСТВЕНИ ЩЕТИ ОТ КАКЪВТО И ДА Е ХАРАКТЕР, ВКЛЮЧИТЕЛНО, БЕЗ ОГРАНИЧЕНИЯ, ЩЕТИ ЗА ЗАГУБА НА ДОБРОЖЕЛАТЕЛНОСТ, СПИРАНЕ НА РАБОТАТА, КОМПЮТЪРНА ПОВРЕДА ИЛИ НЕИЗПРАВНОСТ, ИЛИ ВСЯКАКВИ ДРУГИ ЩЕТИ ИЛИ ЗАГУБИ, ВЪЗНИКНАЛИ ИЛИ СВЪРЗАНИ С УПОТРЕБАТА НА ДОКУМЕНТА ИЛИ ПРОМЕНЕНИТЕ МУ ВЕРСИИ, ДОРИ И КОГАТО ТАЗИ СТРАНА Е БИЛА ИНФОРМИРАНА ЗА ВЪЗМОЖНОСТТА ОТ ТАКИВА ЩЕТИ.</para>
		</listitem>
	  </orderedlist></para>
  </legalnotice>


   <!-- This file  contains link to license for the documentation (GNU FDL), and 
        other legal stuff such as "NO WARRANTY" statement. Please do not change 
        any of this. -->

    <authorgroup> 
      <corpauthor> Sun Microsystems Inc.</corpauthor>

<!-- gdocteam@sun.com (Sun Java Desktop System Documentation Team) -->
      
<!-- This is appropriate place for other contributors: translators,
     maintainers,  etc. Commented out by default.
     
      <othercredit role="translator">
                <firstname>Latin</firstname> 
                <surname>Translator 1</surname> 
                <affiliation> 
                          <orgname>Latin Translation Team</orgname> 
                          <address> <email>translator@gnome.org</email> </address> 
                </affiliation>
                <contrib>Latin translation</contrib>
      </othercredit>
-->
    </authorgroup>

    <revhistory>
    <revision> 
                <revnumber>Ръководство за Калкулатор, версия 2.9</revnumber> 
                <date>March 2005</date> 
                <revdescription> 
                          <para role="author">Екипът по документацията на Sun Java Desktop System</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Ръководство за Калкулатор, версия 2.8</revnumber> 
                <date>Август 2004</date> 
                <revdescription> 
                          <para role="author">Екипът по документацията на Sun Java Desktop System</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Ръководство за gcalctool, версия 2.7</revnumber> 
                <date>Февруари 2004</date> 
                <revdescription> 
                          <para role="author">Екип на Sun за документация на GNOME</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Ръководство за gcalctool, версия 2.6</revnumber> 
                <date>Октомври 2003</date> 
                <revdescription> 
                          <para role="author">Екип на Sun за документация на GNOME</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Ръководство за gcalctool, версия 2.5</revnumber> 
                <date>Юли 2003</date> 
                <revdescription> 
                          <para role="author">Екип на Sun за документация на GNOME</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Ръководство за gcalctool, версия 2.4</revnumber> 
                <date>Юни 2003</date> 
                <revdescription> 
                          <para role="author">Екип на Sun за документация на GNOME</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Ръководство за gcalctool, версия 2.3</revnumber> 
                <date>Април 2003</date> 
                <revdescription> 
                          <para role="author">Екип на Sun за документация на GNOME</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Ръководство за gcalctool, версия 2.2</revnumber> 
                <date>Април 2003</date> 
                <revdescription> 
                          <para role="author">Екип на Sun за документация на GNOME</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Ръководство за gcalctool, версия 2.1</revnumber> 
                <date>Март 2003</date> 
                <revdescription> 
                          <para role="author">Екип на Sun за документация на GNOME</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Ръководство за gcalctool, версия 2.0</revnumber> 
                <date>Март 2003</date> 
                <revdescription> 
                          <para role="author">Екип на Sun за документация на GNOME</para>
                          <para role="publisher">Проект за документация на GNOME</para>
                </revdescription> 
      </revision> 
    </revhistory> 

    <releaseinfo>This manual describes version 5.5.37 of Calculator.
    </releaseinfo> 
    <legalnotice> 
      <title>Обратна връзка</title> 
      <para>To report a bug or make a suggestion regarding the <application>gcalctool</application> application or this manual, follow the directions in the <ulink url="ghelp:gnome-feedback" type="help">GNOME Feedback Page</ulink>. 
      </para>
<!-- Translators may also add here feedback address for translations -->
    </legalnotice> 
  </articleinfo> 

  <indexterm zone="index"> 
    <primary>gcalctool</primary> 
  </indexterm> 
  <indexterm zone="index"> 
    <primary>Калкулатор</primary> 
  </indexterm>

<!-- ============= Document Body ============================= -->
<!-- ============= Introduction ============================== -->
  <sect1 id="gcalctool-intro"> 
    <title>Въведение</title> 
    <para>The <application>gcalctool</application> application provides the following modes for different types of mathematical functionality: </para>
     <variablelist>
        <varlistentry>
        <term><link linkend="gcalctool-basic-mode">Основен</link></term>
        <listitem><para>Основният режим. Предоставя стандартните калкулаторни функции. Може да извършвате стандартно събиране, изваждане, делене и умножения в този режим. Можете също да използвате основните функции и във всеки от другите режими.</para></listitem>
        </varlistentry>
  <varlistentry>
        <term><link linkend="gcalctool-advanced-mode">Разширен</link></term>
        <listitem><para>Provides advanced calculator functions. You can store numbers in 10 different memory registers, and easily retrieve and replace the numbers in the memory registers. You can use all of the Advanced functions in Financial, Scientific and Programming modes.</para></listitem>
        </varlistentry>
        <varlistentry>
        <term><link linkend="gcalctool-financial-mode">Финансов</link></term>
        <listitem><para>Предоставя няколко сложни финансови функции.</para></listitem>
        </varlistentry>
        <varlistentry>
        <term><link linkend="gcalctool-scientific-mode">Научен</link></term>
        <listitem><para>Provides many additional mathematical functions, including trigonometric functions. You can also store your own functions and constants, when you use Scientific mode.</para></listitem>
        </varlistentry>
                <varlistentry>
                <term><link linkend="gcalctool-programming-mode">Programming </link></term>
                <listitem><para>Provides functions useful to a programmer, including bitwise functions and a bit editor.</para></listitem>
                </varlistentry>
     </variablelist>

    <para>You can use <application>gcalctool</application> in the following numbering systems:</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>Бройна система</para></entry>
              <entry colname="COLSPEC1" align="right">
                <para>Основа</para></entry>
            </row>
          </thead> 
          <tbody> 
            <row valign="top">
              <entry><para>Двоична</para></entry>
              <entry align="right"><para>2</para></entry>
            </row>
            <row valign="top">
              <entry><para>Осмична</para></entry>
              <entry align="right"><para>8</para></entry>
            </row>
            <row valign="top">
              <entry><para>Десетична</para></entry>
              <entry align="right"><para>10</para></entry>
            </row>
            <row valign="top">
              <entry><para>Шестнайсетична</para></entry>
              <entry align="right"><para>16</para></entry>
            </row>
          </tbody> 
        </tgroup>
      </informaltable>
                           
  </sect1>

<!-- =========== Getting Started ============================== -->

  <sect1 id="gcalctool-get-start"> 
    <title>Първи стъпки</title> 
    <para>You can start <application>gcalctool</application> in the following ways:</para>
    <variablelist>
      <varlistentry>
        <term>От менюто</term>
        <listitem>
          <para>Изберете <menuchoice><guimenu>Помощни програми</guimenu><guimenuitem>Калкулатор</guimenuitem></menuchoice>.</para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>От командния ред</term>
        <listitem>
          <para>Изпълнете следната команда: <userinput>gnome-calculator</userinput></para>
        </listitem>
      </varlistentry>
    </variablelist>
    <para>When you start <application>gcalctool</application>, the following window is displayed:</para>

    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-basic"> 
        <title><application>gcalctool</application> Basic Mode Window</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_basic_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Basic mode window.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
                <para>The <application>gcalctool</application> window contains the following elements: </para>
                <variablelist>
                  <varlistentry> <term>Лента с менюта</term>
                         <listitem>
                                <para>The menus on the menubar contain all of the commands that you need to work with <application>gcalctool</application>.</para>
                         </listitem>
                  </varlistentry>
                  <varlistentry> <term>Район на преглед</term>
                         <listitem>
                                <para>The display area shows the numbers that you enter, and the results of calculations.</para>
                         </listitem>
                  </varlistentry>
                  <varlistentry> <term>Район на режима</term>
                         <listitem>
                                <para>The mode area displays the buttons for the current mode. The Basic mode buttons are always displayed. Advanced mode buttons are also available in Financial, Scientific and Programming modes.  </para>
                         </listitem>
                  </varlistentry>
                  <varlistentry> <term>Изскачащо меню</term>
                         <listitem>
                <para>The <inlinemediaobject><imageobject><imagedata fileref="figures/gcalctool_menu_symbol.png" format="PNG"/></imageobject><textobject><phrase>Показва символа за изскачащо меню.</phrase></textobject></inlinemediaobject> symbol on a <application>gcalctool</application> button indicates that a popup menu is displayed when you click on that button.</para>
                         </listitem>
                  </varlistentry>
<varlistentry>
         <term>Лента за състоянието</term>
                         <listitem>
                                <para>Лентата за състоянието показва съобщения за статуса на пресмятанията Ви.</para>
                         </listitem>
                  </varlistentry>
                </variablelist>
  </sect1>
<!-- ================ Usage ================================ -->
  <sect1 id="gcalctool-usage"> 
    <title>Употреба</title> 

    <!-- ================ Usage Subsection ================================ -->
    <sect2 id="gcalctool-calc-functions">
                <title>Използване на функциите на калкулатора</title> 
                <para>За да извършите пресмятане, използвайте един от следните методи:</para>
                <itemizedlist>
                  <listitem>
                         <para>Click on the <application>gcalctool</application> buttons to enter numbers and functions.</para>
                  </listitem>
                  <listitem>
                         <para>Give focus to the <application>gcalctool</application> window, then use the keyboard or numeric keypad to specify the calculation that you want to perform. For a complete list of keyboard shortcuts, see <xref linkend="gcalctool-keyboard-shortcut"/>.</para>
                  </listitem>
                </itemizedlist>
                <para>The <application>gcalctool</application> application automatically displays numbers with more than 40 digits, and small numbers, as exponential numbers. For example, the following table shows the value that is displayed when you use the decimal numeric base with an accuracy of 2 significant places: </para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>Показва</para></entry>
              <entry colname="COLSPEC1">
                <para>Обозначава</para></entry>
            </row>
          </thead>
          <tbody>
            <row valign="top">
              <entry><para>1.23e+37</para></entry>
              <entry><para>1.23 * 10<superscript>37</superscript></para></entry>
            </row>
            <row valign="top">
              <entry><para>1e-5</para></entry>
              <entry><para>0.00001</para></entry>
            </row>
          </tbody>
        </tgroup>
      </informaltable>

      <para>За информация относно как да въвеждате число в експоненциален формат, вижте</para>

    <sect3 id="gcalctool-calc-functions-separator">
                <title>Показване на разделител при големите числа</title> 
      <para>За да вмъкнете разделител между всеки три цифри от ляво на десетичната запетая при десетичната основа, изберете <menuchoice><guimenu>Изглед</guimenu><guimenuitem>Показване на разделителя за хилядите</guimenuitem></menuchoice>.</para>
      <note>
      <para>Different countries and cultures have varying conventions for how to communicate. These conventions include the language spoken and the character used as a numeric separator.</para>
      <para><application>gcalctool</application> has been internationalized so users can adapt to their own conventions. This is done by setting a specific locale. We can't determine what locales will exist, except for a standard one called the C locale.</para>
      <para>When you use the C locale, the separator character is not displayed.</para>
      </note>
    </sect3>

    <sect3 id="gcalctool-calc-functions-copy">
                <title>Копиране и поставяне в района на преглед</title> 
                <para>За да копирате резултата на пресмятане, изберете <menuchoice><guimenu>Редактиране</guimenu><guimenuitem>Копиране</guimenuitem></menuchoice>. Може да поставите стойността в друга програма.</para>

                <para>За да поставите копирана стойност в района на преглед, изберете <menuchoice><guimenu>Редактиране</guimenu><guimenuitem>Поставяне</guimenuitem></menuchoice>.</para>
    </sect3>

    </sect2> 
    <!-- ================ Usage Subsection ================================ -->
   
    <sect2 id="gcalctool-basic-mode"> 
      <title>Извършване на основни пресмятания</title> 
      <para>Basic mode is displayed by default when you first start <application>gcalctool</application>. To explicitly invoke Basic mode, choose <menuchoice><guimenu>View</guimenu><guimenuitem>Basic</guimenuitem></menuchoice>.  </para>
      <para>The calculator memory registers are unavailable in Basic Mode. In other words, <menuchoice><guimenu>View</guimenu><guimenuitem>Memory Registers</guimenuitem></menuchoice> is inactive.</para>
    <sect3 id="gcalctool-simple-calc"> 
      <title>Извършване на прости пресмятания</title> 
      <para>За да извършите прости пресмятания, използвайте бутоните описани в</para>
                <table id="gcalctool-TBL-simple-calc" frame="all">
                  <title>Извършване на прости пресмятания</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Цифрови</para> </entry>
                             <entry><para>от <guibutton>0</guibutton> до <guibutton>9</guibutton> включително</para></entry>
                             <entry><para>В десетична и шестнайсетична основа, всички числа са налични. В осмична, <guibutton>8</guibutton> и <guibutton>9</guibutton> не са налични. В двоична, само <guibutton>0</guibutton> и <guibutton>1</guibutton> са налични. Стандартната основа е десетичната.</para></entry>
                             <entry><para><guibutton>1</guibutton></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Десетична запетая</para> </entry>
                             <entry><para><guibutton>.</guibutton></para></entry>
                             <entry><para>Започва дробната част от числовия запис.</para></entry>
                             <entry><para><guibutton>1</guibutton> <guibutton>.</guibutton> <guibutton>2</guibutton></para></entry>
                             <entry><para>1.2</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Пресмятане на резултат</para> </entry>
                             <entry><para><guibutton>=</guibutton></para></entry>
                             <entry><para>Показва резултата от текущото пресмятане в текущата бройна система.</para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Събиране</para> </entry>
                             <entry><para><guibutton>+</guibutton></para></entry>
                             <entry><para>Добавя към текущата стойност в района на преглед, следващото число, което въведете.</para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Изваждане</para> </entry>
                             <entry><para><guibutton>-</guibutton></para></entry>
                             <entry><para>Изважда от текущата стойност в района на преглед, следващото число, което въведете.</para></entry>
                             <entry><para>3 <guibutton>-</guibutton> <guibutton>2</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Умножение</para> </entry>
                             <entry><para><guibutton>*</guibutton></para></entry>
                             <entry><para>Умножава текущата стойност в района на преглед по следващото число, което въведете.</para></entry>
                             <entry><para>3 <guibutton>*</guibutton> <guibutton>2</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>6</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Делене</para> </entry>
                             <entry><para><guibutton>/</guibutton></para></entry>
                             <entry><para>Разделя текущата стойност в района на преглед на следващото число, което въведете.</para></entry>
                             <entry><para>6 <guibutton>/</guibutton> <guibutton>3</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>2</para></entry>
                           </row>
                        <row valign="top">
                             <entry><para>Промяна на аритметичния знак</para> </entry>
                             <entry><para><guibutton>+/-</guibutton></para></entry>
                             <entry><para>Променя положително число на отрицателно и обратното.</para></entry>
                             <entry><para>8 <guibutton>+/-</guibutton></para></entry>
                             <entry><para>-8</para></entry>
                           </row>
                         </tbody>

                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-erase-char"> 
      <title>Изтриване на символи</title> 
      <para>За да изтриете символи, използвайте бутоните описани в</para>
                <table id="gcalctool-TBL-erase-char" frame="all">
                  <title>Изтриване на символи</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Backspace</para> </entry>
                             <entry><para><guibutton>Bksp</guibutton></para></entry>
                             <entry><para>Премахва най-крайния дясностоящ символ от района на преглед.</para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton><guibutton>2</guibutton> <guibutton>Bksp</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Изчистване на запис</para> </entry>
                             <entry><para><guibutton>CE</guibutton></para></entry>
                             <entry><para>Премахва текущата стойност от района на преглед.</para>
                                    <para>This operation is the same as <guibutton>Clr</guibutton></para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton><guibutton>2</guibutton> <guibutton>CE</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>0</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Изчистване</para> </entry>
                             <entry><para><guibutton>Изч</guibutton></para></entry>
                             <entry><para>Занулява текущата стойност в района на преглед и премахва предишни пресметнати резултати. <guibutton>Изч</guibutton> също така маха избора от <guilabel>Хип</guilabel> и <guilabel>Инв</guilabel> опциите в Научен режим.</para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton><guibutton>2</guibutton> <guibutton>Clr</guibutton></para></entry>
                             <entry><para>0</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    
    



  

          <sect3 id="gcalctool-ins-ascii"> 
            <title>Показване на ASCII стойности</title> 
                        <para>За да покажете ASCII стойността на символ, изберете <menuchoice><guimenu>Редактиране</guimenu><guimenuitem>Вмъкване на стойност от ASCII...</guimenuitem></menuchoice>.</para>
                        <para>Появява се прозорецът за вмъкване на ASCII стойност.</para>
                        <para>Въведете изисквания символ в полето <guilabel>Символ</guilabel> и натиснете <guibutton>Вмъкване</guibutton>. ASCII стойността на този символ, в текущата бройна система, се появява в района на преглед. Примерно, ASCII стойността на B в десетична бройна система е 66.</para>
          </sect3>
        </sect2>

 <sect2 id="gcalctool-advanced-mode">
    <title>Извършване на сложни пресмятания</title>
  <para>За да преминете към Разширен режим, изберете <menuchoice><guimenu>Изглед</guimenu><guimenuitem>Разширен режим</guimenuitem></menuchoice>.</para>
    <para>Когато преминете към Разширен режим, следните бутони се появяавт в дясно от бутоните на Основния режим.</para>
    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-advanced"> 
        <title><application>gcalctool</application> Advanced Mode Buttons</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_advanced_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Advanced mode buttons.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
                <table id="gcalctool-TBL-adv-calc" frame="all">
                  <title>Извършване на сложни пресмятания</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Процент</para> </entry>
                             <entry><para><guibutton>%</guibutton></para></entry>
                             <entry><para>Divides the current value by 100.</para></entry>
                             <entry><para>560 <guibutton>%</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>5.60</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Реципрочност</para> </entry>
                             <entry><para><guibutton>1/<replaceable>x</replaceable></guibutton></para></entry>
                             <entry><para>Разделя 1 на текущата стойност в района на преглед.</para></entry>
                             <entry><para>4 <guibutton>1/<replaceable>x</replaceable></guibutton></para></entry>
                             <entry><para>0.25</para></entry>
                           </row>
                    
                           <row valign="top">
                             <entry><para>Корен квадратен</para> </entry>
                             <entry><para><guibutton>кркв</guibutton></para></entry>
                             <entry><para>Пресмята квадратния корен на текущата стойност в района на преглед.</para></entry>
                             <entry><para><guibutton>Sqrt</guibutton> 9 <guibutton>)</guibutton><guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Квадрат</para> </entry>
                             <entry><para><replaceable>x</replaceable><superscript>2</superscript></para></entry>
                             <entry><para>Пресмята квадрата на текущата стойност в района на преглед.</para></entry>
                             <entry><para>3 <replaceable>x</replaceable><superscript>2</superscript></para></entry>
                             <entry><para>9</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Целочислена част</para> </entry>
                             <entry><para><guibutton>Цел</guibutton></para></entry>
                             <entry><para>Пресмята целочислената част на текущата стойност в района на преглед.</para></entry>
                             <entry><para>-23.45 <guibutton>Цел</guibutton></para></entry>
                             <entry><para>-23</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Дробна част</para> </entry>
                             <entry><para><guibutton>Дроб</guibutton></para></entry>
                             <entry><para>Пресмята дробната част на текущата стойност в района на преглед.</para></entry>
                             <entry><para>-23.45 <guibutton>Дроб</guibutton></para></entry>
                             <entry><para>-0.45</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Абсолютна стойност</para> </entry>
                             <entry><para><guibutton>Абс</guibutton></para></entry>
                             <entry><para>Пресмята абсолютната стойност на текущата стойност в района на преглед.</para></entry>
                             <entry><para>-23.45 <guibutton>Абс</guibutton></para></entry>
                             <entry><para>23.45</para></entry>
                         </row>
                           <row valign="top">
                         <entry><para>Скоби</para> </entry>
                             <entry><para><guibutton>(</guibutton> и <guibutton>)</guibutton></para></entry>
                             <entry><para>Calculations within parentheses are performed first. You can nest parentheses to any level.</para></entry>
                           <entry>
                               <para>2 <guibutton>+</guibutton> <guibutton>3</guibutton> <guibutton>*</guibutton> <guibutton>4</guibutton> <guibutton>=</guibutton></para>
                               <para>2 <guibutton>+</guibutton> <guibutton>(</guibutton> <guibutton>3</guibutton> <guibutton>*</guibutton> <guibutton>4</guibutton> <guibutton>)</guibutton></para>
                             </entry>
                             <entry> <para>20</para>
                               <para>14</para>
                             </entry>
                               
                           </row>
                         </tbody>
                  </tgroup>
                </table>

<sect3 id="gcalctool-mem-reg"> 
      <title>Използване на паметовите регистри на калкулатора</title> 
      <para>You can store values in any of the ten <application>gcalctool</application> memory registers <guilabel>R0</guilabel> to <guilabel>R9</guilabel>. To display the memory registers, choose 
        <menuchoice> 
          <guimenu>View</guimenu> 
          <guimenuitem>Memory Registers</guimenuitem> 
        </menuchoice>. 
      </para>
      <para>The memory registers can be dismissed by either choosing 
            <menuchoice><guimenu>View</guimenu><guimenuitem>Memory Registers</guimenuitem></menuchoice> 
            again, or by clicking on the <guibutton>Close</guibutton> button in the memory register window.</para>
        <para><xref linkend="gcalctool-TBL-mem-reg"/> описва паметовите функции, които можете да използвате.</para>
                <table id="gcalctool-TBL-mem-reg" frame="all">
                  <title>Паметови функции</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Запазване на стойност в паметов регистър</para> </entry>
                             <entry><para><guibutton>Пам</guibutton></para></entry>
                             <entry><para>Запазва текущото съдържание на района на преглед в определения паметов регистър. Натиснете <guibutton>Пам</guibutton> и после изберете регистър от изскачащото меню.</para>
                                   <para>To clear a memory register during a <application>gcalctool</application> session:</para>
                                     <orderedlist>
                                       <listitem><para>Натиснете <guibutton>Изч</guibutton>.</para></listitem>
                                       <listitem><para>Натиснете <guibutton>Пам</guibutton>.</para></listitem>
                                       <listitem><para>Изберете регистъра от изскачащото меню.</para></listitem>
                                     </orderedlist>
</entry>
                             <entry><para>22·<guibutton>Пам</guibutton><guilabel>R2</guilabel></para></entry>
                             <entry><para>Стойността 22 е запазена в паметовия регистър <guilabel>R2</guilabel>.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Извличане на стойност от паметов регистър</para> </entry>
                             <entry><para><guibutton>Пос</guibutton></para></entry>
                             <entry><para>Извлича съдържанието на определения паметов регистър. Натиснете <guibutton>Пос</guibutton> и после изберете паметовия регистър от изскачащото меню.</para></entry>
                             <entry><para>0·<guibutton>Пос</guibutton><guilabel>R2</guilabel></para></entry>
                             <entry><para>Стойността в района на преглед е 22.</para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para>Заменяне на стойността на паметов регистър с показаната стойност</para> </entry>
                             <entry><para><guibutton>Зам</guibutton></para></entry>
                             <entry><para>Заменя съдържанието на определен паметов регистър с текущата стойност в района на преглед. Натиснете <guibutton>Зам</guibutton> и после изберете паметов регистър от изскачащото меню.</para></entry>
                             <entry><para>44 <guibutton>Зам</guibutton><guilabel>R2</guilabel></para></entry>
                             <entry><para>Стойността в района на преглед се променя от 44 на 22, а стойността на R2 се променя от 22 на 44.</para> </entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
      <para>Ако използвате клавиатурни бързи клавиши, може да използвате клавиатурата да определите паметовия регистър, както е показано в следните примери:</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>Въвеждане от клавиатурата</para></entry>
              <entry colname="COLSPEC1">
                <para>Описание</para></entry>
            </row>
          </thead>
          <tbody> 
            <row valign="top">
              <entry><para><keycap>S</keycap> <keycap>2</keycap></para></entry>
              <entry><para>Запазва текущото съдържание на района на преглед в паметовия регистър <guilabel>R2</guilabel>.</para></entry>
            </row>
            <row valign="top">
              <entry><para><keycap>R</keycap> <keycap>2</keycap></para></entry>
              <entry><para>Извлича текущото съдържание на паметовия регистър <guilabel>R2</guilabel> в района на преглед.</para></entry>
            </row>
            <row valign="top">
              <entry><para><keycap>X</keycap> <keycap>2</keycap></para></entry>
              <entry><para>Заменя текущата стойност на района на преглед със съдържанието на паметовия регистър <guilabel>R2</guilabel>.</para></entry>
            </row>
          </tbody> 
        </tgroup>
      </informaltable>
    </sect3>


    </sect2> 
    <!-- ================ Usage Subsection ================================ -->
         <sect2 id="gcalctool-financial-mode"> 
      <title>Извършване на финансови пресмятания</title> 
      <para>За да преминете към Финансов режим, изберете <menuchoice><guimenu>Изглед</guimenu><guimenuitem>Финансов режим</guimenuitem></menuchoice>.</para>
     <para>Когато преминете към Финансов режим, следните бутони се появяват над бутоните за Основен и Разширен режим:</para>

    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-financial"> 
        <title><application>gcalctool</application> Financial Mode Buttons</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_financial_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Financial mode buttons.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
      <para>За да извършите финансови пресмятания, използвайте бутоните описани в <xref linkend="gcalctool-TBL-financial-calc"/>.</para>
                <table id="gcalctool-TBL-financial-calc" frame="all">
                  <title>Извършване на финансови пресмятания</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Условия на погасяване</para> </entry>
                             <entry><para><guibutton>УсПо</guibutton></para></entry>
                             <entry><para>Calculates the number of compounding periods necessary to increase an investment from a present value to a future value, at a fixed interest rate per compounding period.</para>
                             </entry>
                             <entry><para>You have just deposited $8000 in an account that pays an annual interest rate of 9%, compounded monthly. Given the annual interest rate, you determine that the simple monthly interest rate is 0.09 / 12 = 0.0075. To calculate the time period necessary to double your investment, click <guibutton>Ctrm</guibutton>, and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Периодична лихва</term>
                                <listitem><para>0.0075</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Бъдеща стойност</term>
                                <listitem><para>16000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Сегашна стойност</term>
                                <listitem><para>8000</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>92.77</para>
                                    <para>Инвестицията се удвоява по стойност за 92.77 месеца.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Двойно-понижаващо обезценяване</para> </entry>
                             <entry><para><guibutton>ДПО</guibutton></para></entry>
                             <entry><para>Изчислява амортизационната норма на актив за указан период от време по метода на снижаващия се остатък.</para>
                             </entry>
                             <entry><para>You have just purchased an office machine for $8000. The useful life of this machine is six years. The salvage value after six years is $900.
To calculate the depreciation expense for the fourth year, using the double-declining balance method, click <guibutton>Ddb</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Cost</term>
                                <listitem><para>8000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Salvage</term>
                                <listitem><para>900</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Life</term>
                                <listitem><para>6</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Period</term>
                                <listitem><para>4</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>790.12</para>
                                    <para>Разхода по обезценяването на четвъртата година е $790.12.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Бъдеща стойност</para> </entry>
                             <entry><para><guibutton>бст</guibutton></para></entry>
                             <entry><para>Calculates the future value of an investment based on a series of equal payments at a specific periodic interest rate, over the number of payment periods in the term.
</para>
                             </entry>
                             <entry><para>You plan to deposit $4000 in a bank account on the last day of each year for the next 20 years. The account pays 8% interest, compounded annually. Interest is paid on the last day of each year. 
To calculate the value of your account in 20 years, press <guibutton>Fv</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Периодично разплащане</term>
                                <listitem><para>4000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Периодична лихва</term>
                                <listitem><para>0.08</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Number Of Periods</term>
                                <listitem><para>20</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>183047.86</para>
                                    <para>На края на 20те години, сумата в сметката е $183,047.86.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Gross Profit Margin</para></entry>
                             <entry><para><guibutton>Gpm</guibutton></para></entry>
                             <entry><para>Calculates the resale price of a product, based on the product cost and the wanted gross profit margin.</para></entry>
                             <entry><para>You sell T-Shirts online. Each T-Shirt cost you $12 in material and labor. You want to sell the T-Shirts with a Gross Profit Margin of 0.40 - for every five dollars you earn, you want two to be profit. To calculate the price you would have to sell your T-Shirts for, press <guibutton>Gpm</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Cost</term>
                                <listitem><para>12</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Margin</term>
                                <listitem><para>0.40</para></listitem>
                                </varlistentry>
                             </variablelist>
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>20</para>
                             <para>You will have to sell your T-Shirts for $20</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Периодично разплащане</para> </entry>
                             <entry><para><guibutton>ППл</guibutton></para></entry>
                             <entry><para>Пресмята сумата на периодично разплащане за заем, където плащанията се правят на края на всеки период.</para>
                             </entry>
                             <entry><para>You are considering a $120,000 mortgage for 30 years at an annual interest rate of 11.0%. Given the annual interest rate, you determine that the simple monthly interest rate is 0.11 / 12 = 0.00917. The term is 30 * 12 = 360 months. To calculate the monthly repayment for this mortgage, press <guibutton>Pmt</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Principal</term>
                                <listitem><para>120000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Периодична лихва</term>
                                <listitem><para>0.00917</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Срок</term>
                                <listitem><para>360</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>1143.15</para>
                                    <para>Месечните разплащания са $1143.15.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Сегашна стойност</para> </entry>
                             <entry><para><guibutton>ТСт</guibutton></para></entry>
                             <entry><para>Calculates the present value of an investment based on a series of equal payments, discounted at a periodic interest rate, over the number of payment periods in the term.
</para>
                             </entry>
                             <entry><para>Току що сте спечелили милион долара. Наградата се изплаща в 20 годишни вноски, всяка от $50,000. Годишните плащания се получават в края на всяка година. Ако приемете годишните плащания от $50,000, ще инвестирате парите при лихва от 9%, добавяне годишно.</para>
                                    <para>However, you are given the option of receiving a single lump-sum payment of $400,000 instead of the million dollars annuity. 
To calculate which option is worth more in today's dollars, press <guibutton>Pv</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Периодично разплащане</term>
                                <listitem><para>50000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Периодична лихва</term>
                                <listitem><para>0.09</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Number Of Periods</term>
                                <listitem><para>20</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>456427.28</para>
                                    <para>$1,000,000 за 20 години ще струва $456,427.28 в днешна валута.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Периодична лихва</para> </entry>
                             <entry><para><guibutton>Лихва</guibutton></para></entry>
                             <entry><para>Calculates the periodic interest necessary to increase an investment of a present value to a future value, over a number of compounding periods.
</para>
                             </entry>
                             <entry><para>You have invested $20,000 in a bond. The bond matures in five years, and has a maturity value of $30,000. Interest is compounded monthly. The term is 5 * 12 = 60 months.
To calculate the periodic interest rate for this investment, press <guibutton>Rate</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Бъдеща стойност</term>
                                <listitem><para>30000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Сегашна стойност</term>
                                <listitem><para>20000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Срок</term>
                                <listitem><para>60</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>.00678</para>
                                    <para>Месечната лихва е 0.678%. Годишната лихва е 0.678% * 12 = 8.14%.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Обезценяване по права линия</para> </entry>
                             <entry><para><guibutton>ОПЛ</guibutton></para></entry>
                             <entry><para>Пресмята обезценяването по права линия на авоар за даден период. Сумата на обезценяването е <replaceable>сума</replaceable> - <replaceable>спасена стойност</replaceable>. Метода на правата линия на обезценяване разпределя равномерно обезценяването по полезен живот на авоара. Полезният живот е броя периоди, обикновено години, през които авоара се оебзценява.</para>
                             </entry>
                             <entry><para>You have just purchased an office machine for $8000. The useful life of this machine is six years. The salvage value after six years is $900.
To calculate the yearly depreciation expense, using the straight-line method, prss <guibutton>Sln</guibutton>, and put the following values into the first three memory registers:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Cost</term>
                                <listitem><para>8000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Salvage</term>
                                <listitem><para>900</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Life</term>
                                <listitem><para>6</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>1183.33</para>
                                    <para>Годишното обезценяване е $1183.33.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Амортизация като сума на обезценяването</para> </entry>
                             <entry><para><guibutton>Амо</guibutton></para></entry>
                             <entry><para>Пресмята обезценяващата издържка на авоар за определен период от време, използвайки метода на амортизацията като сума на обезценяването. Този метод на обезценяване ускорява скоростта на обезценяване, така че има повече разходи по обезценяването в ранните периоди, отколкото в по-късните. Обезценяването е <replaceable>сума</replaceable> - <replaceable>спасена стойност</replaceable>. Полезният живот е броят периоди, обикновено години, през които даден авоар се обезценява.</para>
                             </entry>
                             <entry><para>You have just purchased an office machine for $8000. The useful life of this machine is six years. The salvage value after six years is $900.
To calculate the depreciation expense for the fourth year, using the sum-of-the-years'-digits method, press <guibutton>Syd</guibutton>, and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Cost</term>
                                <listitem><para>8000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Salvage</term>
                                <listitem><para>900</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Life</term>
                                <listitem><para>6</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Period</term>
                                <listitem><para>4</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>1014.29</para>
                                    <para>Разходът по обезценяването на четвъртата година е $1014.29.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Период на плащане</para> </entry>
                             <entry><para><guibutton>Срок</guibutton></para></entry>
                             <entry><para>Calculates the number of payment periods that are necessary during the term of an ordinary annuity, to accumulate a future value, at a certain periodic interest rate.</para>
                             </entry>
                             <entry><para>You plan to deposit $1800 in a bank account on the last day of each year. The account pays 11% interest, compounded annually. Interest is paid on the last day of each year. 
To calculate the time period necessary to accumulate $120,000, press <guibutton>Term</guibutton>, and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Периодично разплащане</term>
                                <listitem><para>1800</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Бъдеща стойност</term>
                                <listitem><para>120000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Периодична лихва</term>
                                <listitem><para>0.11</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>20.32</para>
                                    <para>$120,000 се акумулират в сметката за 20.32 години.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect2> 
    <!-- ================ Usage Subsection ================================ -->
    <sect2 id="gcalctool-scientific-mode"> 
      <title>Извършване на научни пресмятания</title> 
      <para>За да преминете към Научен режим, изберете <menuchoice><guimenu>Изглед</guimenu><guimenuitem>Научен</guimenuitem></menuchoice>.</para>
    <para>Когато преминете към Научен режим, следните бутони се показват над бутоните за режимите Основен и Разширен:</para>

    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-scientific"> 
        <title><application>gcalctool</application> Scientific Mode Buttons</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_scientific_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Scientific mode buttons.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
    <sect3 id="gcalctool-set-acc"> 
      <title>Настройване на точността</title> 
      <para>To set the accuracy of the display area and of the memory registers, click <guibutton>Acc</guibutton>, then select from the popup menu the accuracy level that you require. The current accuracy level is indicated by a preceding black circle in the popup menu. Up to 99 significant places can be displayed. The default accuracy is 9 significant places. </para>
<para>За да настроите точността над 9, изберете <guilabel>Друго (9)·...</guilabel> и изберете нивото на точност, което Ви е нужно в появилия се прозорец.</para>
      <para>По подразбиране, завършващите нули не се показват. За да се показват крайните нули, натиснете <guibutton>Точ</guibutton> и после <guilabel>Показване на крайните нули</guilabel> или изберете <menuchoice><guimenu>Изглед</guimenu><guimenuitem>Показване на крайните нули</guimenuitem></menuchoice>. Отметка отбелязва дали опцията е включена или не. За да скриете крайните нули, изберете отново <menuchoice><guimenu>Изглед</guimenu><guimenuitem>Показване на крайните нули</guimenuitem></menuchoice>.</para>
      <para>Примерите в следната таблица показват как настройките на точността влияят на <replaceable>x</replaceable> в района на преглед, когато използвате десетична основа с включена опцията <guimenuitem>Показване на крайните нули</guimenuitem>, за пресмятането <literal>1 / 8 = <replaceable>x</replaceable></literal>:</para>
                <informaltable frame="all">
                  <tgroup cols="2" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Точност</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>1 позиция</para></entry>
                             <entry><para>1.2</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>2 позиции</para></entry>
                             <entry><para>1.25</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>3 позиции</para></entry>
                             <entry><para>1.250</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </informaltable>
    </sect3>
    <sect3 id="gcalctool-display-type"> 
      <title>Настройване на вида изглед</title> 
      <para>За да настроите вида изглед, изберете един от бутоните описани в <xref linkend="gcalctool-TBL-display-type"/>.</para>
                <table id="gcalctool-TBL-display-type" frame="all">
                  <title>Настройване на вида изглед</title> 
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Инжинерен формат</para> </entry>
                             <entry><para><guibutton>Инж</guibutton></para></entry>
                             <entry><para>Настройване на изгледа към инженерен формат. Резултатите се показват в научен стил. Експонентата винаги се дели на три.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Фиксирана точка</para> </entry>
                             <entry><para><guibutton>Фик</guibutton></para></entry>
                             <entry><para>Sets the display type to fixed-point format. Results are not displayed in scientific notation. Fixed-point is the default display type.  If you change from scientific mode to either basic mode or financial mode, <application>gcalctool</application> automatically sets the display type to fixed-point format.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Научен формат</para> </entry>
                             <entry><para><guibutton>Нау</guibutton></para></entry>
                             <entry><para>Настройване на вида изглед към научен формат. Резултатите се показват в научен стил с фиксиран брой цифри.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-trig-type"> 
      <title>Определяне на тригонометричния тип</title> 
      <para>За да настроите тригонометричния вид, изберете един от бутоните описани в <xref linkend="gcalctool-TBL-trig-type"/>.</para>
                <table id="gcalctool-TBL-trig-type" frame="all">
                  <title>Определяне на тригонометричния тип</title> 
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Градуси</para> </entry>
                             <entry><para><guibutton>Градуси</guibutton></para></entry>
                             <entry><para>Настройва тригонометричния тип към градуси. Градусите са стандартния тип.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Градиани</para> </entry>
                             <entry><para><guibutton>Градиани</guibutton></para></entry>
                             <entry><para>Настройва тригонометричния тип към градиани.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Радиани</para> </entry>
                             <entry><para><guibutton>Радиани</guibutton></para></entry>
                             <entry><para>Настройва тригонометричния тип към радиани.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-trig-options"> 
      <title>Настройване на тригонометричните опции</title> 
      <para>За да настроите тригонометричните опции, използвайте опциите описани в <xref linkend="gcalctool-TBL-trig-options"/>.</para>
                <table id="gcalctool-TBL-trig-options" frame="all">
                  <title>Настройване на тригонометрични опции</title> 
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Индикатор за хиперболичната опция</para> </entry>
                             <entry><para><guibutton>Хип</guibutton></para></entry>
                             <entry><para>Избира хиперболичната опция за използване с тригонометричните функции.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Индикатор за обратни тригонометрични функции</para> </entry>
                             <entry><para><guibutton>Инв</guibutton></para></entry>
                             <entry><para>Избира обръщащата опция за използване с тригонометричните функции.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
      <para>По подразбиране опциите описани в <xref linkend="gcalctool-TBL-trig-options"/> не са избрани. Натиснете <guibutton>Изч</guibutton>, за да махнете избора от тях.</para>

    </sect3>
    <sect3 id="gcalctool-trig-calc"> 
      <title>Пресмятане на тригонометрични стойности</title> 
      <para>За да пресмятате тригонометрични стойности, използвайте бутоните описани в <xref linkend="gcalctool-TBL-trig-calc"/>.</para>
                <table id="gcalctool-TBL-trig-calc" frame="all">
                  <title>Пресмятане на тригонометрични стойности</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Косинус <literal>Кос</literal></para> </entry>
                             <entry><para><guibutton>Кос</guibutton>, опцията <guilabel>Хип</guilabel> не е избрана, опцията <guilabel>Инв</guilabel> не е избрана</para></entry>
                             <entry><para>Пресмята косинуса на текущата стойност в района на преглед.</para></entry>
                             <entry><para>60 <guibutton>Кос</guibutton></para></entry>
                             <entry><para>0.5</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Аркус Косинус <literal>acos</literal></para> </entry>
                             <entry><para><guibutton>Кос</guibutton>, опцията <guilabel>Хип</guilabel> не е избрана, опцията <guilabel>Инв</guilabel> е избрана</para></entry>
                             <entry><para>Пресмята аркус косинус на текущата стойност в района на преглед.</para></entry>
                             <entry><para>0.5 <guilabel>Инв</guilabel><guibutton>Кос</guibutton></para></entry>
                             <entry><para>60</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Хиперболичен Косинус <literal>cosh</literal></para> </entry>
                             <entry><para><guibutton>Кос</guibutton>, опцията <guilabel>Хип</guilabel> е избрана, опцията <guilabel>Инв</guilabel> не е избрана</para></entry>
                             <entry><para>Пресмята хиперболичен косинус на текущата стойност в района на преглед.</para></entry>
                             <entry><para>0.4 <guilabel>Хип</guilabel><guibutton>Кос</guibutton></para></entry>
                             <entry><para>1.081072372</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Аркус Хиперболичен Косинус <literal>acosh</literal></para> </entry>
                             <entry><para><guibutton>Кос</guibutton>, опцията <guilabel>Хип</guilabel> е избрана, опцията <guilabel>Инв</guilabel> е избрана</para></entry>
                             <entry><para>Пресмята аркус хиперболичен косинус на текущата стойност в района на преглед.</para></entry>
                             <entry><para>1.6 <guilabel>Хип</guilabel><guilabel>Инв</guilabel><guibutton>Кос</guibutton></para></entry>
                             <entry><para>1.046967915</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Синус <literal>Син</literal></para> </entry>
                             <entry><para><guibutton>Син</guibutton>, опцията <guilabel>Хип</guilabel> не е избрана, опцията <guilabel>Инв</guilabel> не е избрана</para></entry>
                             <entry><para>Пресмята синус на текущата стойност в района на преглед.</para></entry>
                             <entry><para>90 <guibutton>Син</guibutton></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Аркус Синус <literal>asin</literal></para> </entry>
                             <entry><para><guibutton>Син</guibutton>, опцията <guilabel>Хип</guilabel> не е избрана, опцията <guilabel>Инв</guilabel> е избрана</para></entry>
                             <entry><para>Пресмята аркус синус на текущата стойност в района на преглед.</para></entry>
                             <entry><para>1 <guilabel>Инв</guilabel><guibutton>Син</guibutton></para></entry>
                             <entry><para>90</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Хиперболичен Синус <literal>sinh</literal></para> </entry>
                             <entry><para><guibutton>Син</guibutton>, опцията <guilabel>Хип</guilabel> е избрана, опцията <guilabel>Инв</guilabel> не е избрана</para></entry>
                             <entry><para>Пресмята хиперболичен синус на текущата стойност в района на преглед.</para></entry>
                             <entry><para>0.4 <guilabel>Хип</guilabel><guibutton>Син</guibutton></para></entry>
                             <entry><para>0.410752326</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Аркус Хиперболичен Синус <literal>asinh</literal></para> </entry>
                             <entry><para><guibutton>Син</guibutton>, опцията <guilabel>Хип</guilabel> е избрана, опцията <guilabel>Инв</guilabel> е избрана</para></entry>
                             <entry><para>Пресмята аркус хиперболичен синус на текущата стойност в района на преглед.</para></entry>
                             <entry><para>1.6 <guilabel>Хип</guilabel><guilabel>Инв</guilabel><guibutton>Син</guibutton></para></entry>
                             <entry><para>1.248983328</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Тангенс <literal>tan</literal></para> </entry>
                             <entry><para><guibutton>Тан</guibutton>, опцията <guilabel>Хип</guilabel> не е избрана, опцията <guilabel>Инв</guilabel> не е избрана</para></entry>
                             <entry><para>Пресмята тангенс на текущата стойност в района на преглед.</para></entry>
                             <entry><para>45 <guibutton>Тан</guibutton></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Аркус Тангенс <literal>atan</literal></para> </entry>
                             <entry><para><guibutton>Тан</guibutton>, опцията <guilabel>Хип</guilabel> не е избрана, опцията <guilabel>Инв</guilabel> е избрана</para></entry>
                             <entry><para>Пресмята аркус тангенс на текущата стойност в района на преглед.</para></entry>
                             <entry><para>1 <guilabel>Инв</guilabel><guibutton>Тан</guibutton></para></entry>
                             <entry><para>45</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Хиперболичен тангенс <literal>tanh</literal></para> </entry>
                             <entry><para><guibutton>Тан</guibutton>, опцията <guilabel>Хип</guilabel> е избрана, опцията <guilabel>Инв</guilabel> е избрана</para></entry>
                             <entry><para>Пресмята хиперболичен тангенс на текущата стойност в района на преглед.</para></entry>
                             <entry><para>0.6 <guilabel>Хип</guilabel><guibutton>Тан</guibutton></para></entry>
                             <entry><para>0.537049567</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Аркус Хиперболичен Тангенс <literal>atanh</literal></para> </entry>
                             <entry><para><guibutton>Тан</guibutton>, опцията <guilabel>Хип</guilabel> е избрана, опцията <guilabel>Инв</guilabel> е избрана</para></entry>
                             <entry><para>Пресмята аркус хиперболичен тангенс на текущата стойност в района на преглед.</para></entry>
                             <entry><para>0.6 <guilabel>Хип</guilabel><guilabel>Инв</guilabel><guibutton>Тан</guibutton></para></entry>
                             <entry><para>0.693147181</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-logs-calc"> 
      <title>Пресмятане на логаритми</title> 
      <para>За да пресмятате логаритми, използвайте бутоните описани в <xref linkend="gcalctool-TBL-logs-calc"/>.</para>
                <table id="gcalctool-TBL-logs-calc" frame="all">
                  <title>Пресмятане на логаритми</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Обикновен логаритъм с основа 10</para> </entry>
                             <entry><para>Log<subscript><replaceable>10</replaceable></subscript></para></entry>
                             <entry><para>Calculates the common logarithm (base 10) of the current value in the display area.</para></entry>
                             <entry><para>10 Log<subscript><replaceable>10</replaceable></subscript></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Натурален логаритъм</para> </entry>
                             <entry><para><guibutton>НЛ</guibutton></para></entry>
                             <entry><para>Пресмята натуралния логаритъм на текущата стойност в района на преглед.</para></entry>
                             <entry><para>10 <guibutton>НЛ</guibutton></para></entry>
                             <entry><para>2.30</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Common Logarithm Base 2</para> </entry>
                             <entry><para>Log<subscript><replaceable>2</replaceable></subscript></para></entry>
                             <entry><para>Calculates the common logarithm (base 2) of the current value in the display area.</para></entry>
                             <entry><para>10 Log<subscript><replaceable>2</replaceable></subscript></para></entry>
                             <entry><para>3.32</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
                <note>
                  <para>Common antilogarithm and natural antilogarithm are not supported in this version of <application>gcalctool</application>.</para>
                </note>
    </sect3>
    <sect3 id="gcalctool-enter-exp"> 
      <title>Въвеждане на експоненциални числа</title> 
      <para>За да въвеждате експоненциални числа, използвайте бутона <guibutton>Екс</guibutton>.</para>
      <para>Бутонът <guibutton>Екс</guibutton> Ви позволява да въвеждате числата в експоненциален вид - т. нар. научен запис <replaceable>мантиса</replaceable> * <replaceable>основа</replaceable><superscript><replaceable>експонента</replaceable></superscript>:</para>
<variablelist>
  <varlistentry>
    <term><replaceable>мантиса</replaceable></term>
    <listitem><para>Текуща ненулева стойност в райна на преглед. Ако текущата стойност там е 0, то мантисата е 1,0.</para></listitem>
  </varlistentry>
  <varlistentry>
    <term><replaceable>основа</replaceable></term>
    <listitem><para>2, 8, 10, или 16 за респективно двоична, осмична, десетична или шестнайсетична бройна система.</para></listitem>
  </varlistentry>
  <varlistentry>
    <term><replaceable>експонента</replaceable></term>
    <listitem><para>Следващото число, което въвеждате.</para></listitem>
  </varlistentry>
</variablelist>

<para>When you click <guibutton>Exp</guibutton>, the calculator displays <literal>. +</literal> to represent 
<replaceable>base</replaceable> to the power of the next number that you enter. </para>
<para>To change the sign of the number, use the <guibutton>+/-</guibutton> button before the <guibutton>Exp</guibutton> button.
To change the sign of the exponent (the power to which the number is raised) use <guibutton>-</guibutton> after the
<guibutton>Exp</guibutton> button.</para>

<para>To enter a decimal number in exponential format, use the guidelines in the following table: </para>
          <informaltable frame="all">
            <tgroup cols="3" colsep="1" rowsep="1">
                   <colspec colname="COLSPEC0" colwidth="50*"/>
                   <colspec colname="COLSPEC1" colwidth="50*"/>
                   <thead>
                          <row valign="top">
                            <entry colname="COLSPEC0">
                                   <para>Число</para></entry>
                            <entry colname="COLSPEC1">
                                   <para>Enter</para></entry>
                            <entry colname="COLSPEC2">
                                   <para>Показано число</para></entry>
                          </row>
                   </thead> 
                   <tbody> 
                     <row valign="top">
                       <entry><para>1200000000</para></entry>
                       <entry><para>12 <guibutton>Exp</guibutton> <guibutton>+</guibutton> <guibutton>8</guibutton> <guibutton>=</guibutton></para></entry>
                       <entry><para>1200000000</para></entry>
                     </row>
                     <row valign="top">
                       <entry><para>-1200000000</para></entry>
                       <entry><para><guibutton>-</guibutton> 12 <guibutton>Exp</guibutton> <guibutton>+</guibutton> <guibutton>8</guibutton> <guibutton>=</guibutton> </para></entry>
                       <entry><para>-1200000000</para></entry>
                     </row>
                     <row valign="top">
                       <entry><para>0.00000012</para></entry>
                       <entry><para>12 <guibutton>Exp</guibutton> <guibutton>-</guibutton> <guibutton>8</guibutton> <guibutton>=</guibutton> </para></entry>
                       <entry><para>1.2e-7</para></entry>
                     </row>
                     <row valign="top">
                       <entry><para>-0.00000012</para></entry>
                       <entry><para><guibutton>-</guibutton> 12 <guibutton>Exp</guibutton> <guibutton>-</guibutton> <guibutton>8</guibutton> <guibutton>=</guibutton> </para></entry>
                       <entry><para>-1.2e-7</para></entry>
                     </row>
                   </tbody>
            </tgroup>
          </informaltable>

    </sect3>
    <sect3 id="gcalctool-edit-const"> 
      <title>Използване на постоянни стойности</title> 
      <para>Натиснете <guibutton>Кон</guibutton>, за да се покаже списък с определени константни стойности. Всички тези стойности са определени в десетична бройна система, дори и ако текущата бройна система не е десетична.</para>
      <para>Изберете константа от менюто, за да въведете стойността и в района на преглед. Ако използвате бързия клавиш <keycap>#</keycap>, може да използвате клавиатурата да определите константата както е показано в следния пример:</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>Въвеждане от клавиатурата</para></entry>
              <entry colname="COLSPEC1">
                <para>Константа</para></entry>
            </row>
          </thead>
          <tbody>
            <row valign="top">
              <entry><para><keycap>#</keycap> <keycap>3</keycap> </para></entry>
              <entry><para>C3</para></entry>
            </row>
          </tbody>
        </tgroup>
      </informaltable>
      <para>The <application>gcalctool</application> application provides ten default constant values, as described in the following table:</para>
                <informaltable frame="all">
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1" colwidth="50*"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Число</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Стойност</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>C0</para></entry>
                             <entry><para>0.621</para></entry>
                             <entry><para>Фактор на превръщане на километър в миля</para>
                                    <para>Умножете текущата стойност в района на преглед по тази константа, за да преобразувате километрите в час в мили в час. Например, 8 * <guibutton>Кон</guibutton><guilabel>C0</guilabel><keycap>=</keycap> 5.</para>
                                    <para>Разделяне на текущата стойност в района на преглед на тази константа, за да се преобразува от мили в час към километри в час. Например, 5 / <guibutton>Кон</guibutton><guilabel>C0</guilabel><keycap>=</keycap> 8.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C1</para></entry>
                             <entry><para>1.414213562</para></entry>
                             <entry><para>Корен квадратен от 2</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C2</para></entry>
                             <entry><para>2.718281828</para></entry>
                             <entry><para>e</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C3</para></entry>
                             <entry><para>3.141592653</para></entry>
                             <entry><para>пи</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C4</para></entry>
                             <entry><para>0.3937007</para></entry>
                             <entry><para>Фактор на превръщане на сантиметър в инч</para>
                                    <para>Умножете текущата стойност в района на преглед по тази константа, за да преобразувате сантиметри в инчове. Например, 30 * <guibutton>Кон</guibutton><guilabel>C4</guilabel><keycap>=</keycap> 12.</para>
                                    <para>Разделете текущата стойност в района на преглед на тази константа, за да преобразувате инчове в сантиметри. Например 12 / <guibutton>Кон</guibutton><guilabel>C4</guilabel><keycap>=</keycap> 30.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C5</para></entry>
                             <entry><para>57.295779513</para></entry>
                             <entry><para>Градуси в радиан</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C6</para></entry>
                             <entry><para>1048576</para></entry>
                             <entry><para>2 ^ 20</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C7</para></entry>
                             <entry><para>0.0353</para></entry>
                             <entry><para>Фактор на превръщане на грам в унция</para>
                                    <para>Умножете текущата стойност в района на преглед по тази константа, за да преобразувате грамове в унции. Например, 500 * <guibutton>Кон</guibutton><guilabel>C7</guilabel><keycap>=</keycap> 18.</para>
                                    <para>Разделете текущата стойноств в района на преглед на тази константа, за да преобразувате унции в грамове. Например, 18 / <guibutton>Кон</guibutton><guilabel>C7</guilabel><keycap>=</keycap> 500.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C8</para></entry>
                             <entry><para>0.948</para></entry>
                             <entry><para>Фактор на превръщане от килоджаул в британска термална единица</para>
                                    <para>Умножете текущата стойност в района на преглед по тази константа, за да превърнете килоджаули в британски термални единици. Например, 10 * <guibutton>Кон</guibutton><guilabel>C8</guilabel><keycap>=</keycap> 9.48.</para>
                                    <para>Разделете текущата стойност в района на преглед на тази константа, за да преобразувате британски термални единици в килоджаули. Например, 9.48 / <guibutton>Кон</guibutton><guilabel>C8</guilabel><keycap>=</keycap> 10.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C9</para></entry>
                             <entry><para>0.061</para></entry>
                             <entry><para>Фактор на превръщане на кубични сантиметри в кубични инчове</para>
                                    <para>Умножете текущата стойност в района на преглед по тази константа, за да преобразувате кубични сантиметри в кубични инчове. Например, 100 * <guibutton>Кон</guibutton><guilabel>C9</guilabel><keycap>=</keycap> 6.10.</para>
                                    <para>Разделете текущата стойност в района на преглед по тази константа, за да преобразувате кубични инчове в кубични сантиметри. Например, 6.10 / <guibutton>Кон</guibutton><guilabel>C9</guilabel><keycap>=</keycap> 100.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </informaltable>
      <para>Може да презаписвате стандартните константи, за да запазвате Ваши собствени.</para>
      <para>За да запазите нова константа или да редактирате съществуваща, извършете следните стъпки:</para>
      <orderedlist>
        <listitem>
           <para>Натиснете <guibutton>Кон</guibutton>, после изберете от появилото се меню <guilabel>Редактиране на константи</guilabel>.</para>
        </listitem>
        <listitem>
      <para>В прозореца за <guilabel>Редактиране на константи</guilabel>, изберете константата, която искате да презапишете или редактирате.</para>
        </listitem>
        <listitem>
      <para>Натиснете на полето Стойност и въведете новата стойност.</para>
        </listitem>
        <listitem>
      <para>Натиснете върху полето Описание и въведете новото описание.</para>
        </listitem>
        <listitem>
      <para>Натиснете <guibutton>Добре</guibutton>, за да запазите промените си и да затворите прозореца за <guilabel>Редактиране на константи</guilabel>.</para>
        </listitem>
      </orderedlist>
    </sect3>
    <sect3 id="gcalctool-edit-func"> 
      <title>Използване на функции</title> 
      <para>To show the available functions, click <guibutton>Fun</guibutton>. A popup menu displays the list of defined functions. Select a function from the menu to run that function.</para>
<para>Ако използвате бърз клавиш <keycap>F</keycap>, може да използвате клавиатурата, за да определите функцията, както е показано в следния пример:</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>Въвеждане от клавиатурата</para></entry>
              <entry colname="COLSPEC1">
                <para>Функция</para></entry>
            </row>
          </thead>
          <tbody>
            <row valign="top">
              <entry><para><keycap>F</keycap> <keycap>3</keycap> </para></entry>
              <entry><para>F3</para></entry>
            </row>
          </tbody>
        </tgroup>
      </informaltable>

      <para>The <application>gcalctool</application> application does not provide any default functions. You can store up to ten functions. </para>
      <para>За да запазите нова функция или редактирате съществуваща, извършете следните стъпки:</para>
      <orderedlist>
        <listitem>
           <para>Натиснете <guibutton>Фнк</guibutton>, после от появилото се меню изберете <guilabel>Редактиране на функции</guilabel>.</para>
        </listitem>
        <listitem>
      <para>В прозореца за <guilabel>Редактиране на функции</guilabel>, изберете празен запис или функцията, която искате да презапишете.</para>
        </listitem>
        <listitem>
      <para>Click on the Value field, then enter the new equation to solve. You can use "ans" for the result of the previous equation and "R5" for register 5 etc. For example, enter <literal>(-R1+sqrt(R1^2-4*R0*R2))/(2*R0)</literal> to calculate a root of the quadratic equation R0*x^2 + R1*x + R2 = 0.</para>
        </listitem>
        <listitem>
      <para>Click on the Description field, then enter the new description. For example, <literal>Quadratic Solver</literal>.</para>
        </listitem>
        <listitem>
      <para>Натиснете <guibutton>Добре</guibutton>, за да запазите промените си и да затворите прозореца <guilabel>Редактиране на функции</guilabel>.</para>
        </listitem>
      </orderedlist>
    </sect3>
    <sect3 id="gcalctool-misc-calc"> 
      <title>Извършване на различни научни пресмятания</title> 
      <para>За да извършвате множество научни пресмятания, използвайте бутоните описани в <xref linkend="gcalctool-TBL-misc-calc"/>.</para>
                <table id="gcalctool-TBL-misc-calc" frame="all">
                  <title>Извършване на различни научни пресмятания</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                                                      <row valign="top">
                             <entry><para>e на степен <replaceable>x</replaceable></para> </entry>
                             <entry><para>e<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>Пресмята стойността на <literal>e</literal> повдигната на степен от текущата стойност на района на преглед.</para></entry>
                             <entry><para>2 e<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>7.39</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>10 на степен <replaceable>x</replaceable></para> </entry>
                             <entry><para>10<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>Пресмята стойността на 10 повдигната на степен от текущата стойност в района на преглед.</para></entry>
                             <entry><para>2 10<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>100</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>2 to the <replaceable>x</replaceable> power</para> </entry>
                             <entry><para>2<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>Calculates the value of 2 raised to the power of the current value in the display area.</para></entry>
                             <entry><para>2 2<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>4</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>x на степен <replaceable>y</replaceable></para> </entry>
                             <entry><para><replaceable>x</replaceable><superscript><replaceable>y</replaceable></superscript></para></entry>
                             <entry><para>Повдига текущата стойност в района на преглед на степен от следващата стойност, която въведете.</para></entry>
                             <entry><para>2 <replaceable>x</replaceable><superscript><replaceable>y</replaceable></superscript> <guibutton>4</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>16</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>x to the reciprocal <replaceable>y</replaceable> power</para> </entry>
                             <entry><para><replaceable>x</replaceable><superscript>1/<replaceable>y</replaceable></superscript></para></entry>
                             <entry><para>Raises the current value in the display area to the reciprocal power of the next value that you enter.</para></entry>
                             <entry><para>2 <replaceable>x</replaceable><superscript>1/<replaceable>y</replaceable></superscript> <guibutton>4</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>16</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><replaceable>x</replaceable> факториел</para> </entry>
                             <entry><para><guibutton><replaceable>x</replaceable>!</guibutton></para></entry>
                             <entry><para>Пресмята факториел от текущата стойност в района на преглед. <replaceable>x</replaceable> факториел е <replaceable>x</replaceable>*(<replaceable>x</replaceable>-1)*(<replaceable>x</replaceable>-2)...*1. Тази функция е приложима само към положителни цели числа.</para></entry>
                             <entry><para>4 <guibutton><replaceable>x</replaceable>!</guibutton></para></entry>
                             <entry><para>24</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Modulus Division</para> </entry>
                             <entry><para><guibutton>Mod</guibutton></para></entry>
                             <entry><para>Divides the current integer value in the display area by the next integer number that you enter, displaying the remainder.</para></entry>
                             <entry><para>15 <guibutton>Mod</guibutton> <guibutton>4</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Генератор на произволни числа</para> </entry>
                             <entry><para><guibutton>Случ</guibutton></para></entry>
                             <entry><para>Генерира произволно число от 0.0 до 1.0 и после го показва в района на преглед.</para></entry>
                             <entry><para><guibutton>Случ</guibutton></para></entry>
                             <entry><para>0.14</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    </sect2> 
    <sect2 id="gcalctool-programming-mode">
      <title>To Perform Programming Calculations</title>
      <para>To change to Programming mode, choose 
        <menuchoice> 
          <guimenu>View</guimenu> 
          <guimenuitem>Programming</guimenuitem> 
        </menuchoice>. 
      </para>
    <para>When you change to Programming mode, the following widget is displayed above the Base and Advanced mode buttons:</para>

    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-programming"> 
        <title><application>gcalctool</application> Programming Mode Buttons</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_programming_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Programming mode buttons.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
    <sect3 id="gcalctool-num-base"> 
      <title>Определяне на бройната система</title> 
      <para>За да настроите броичната система, изберете един от бутоните описани в</para>
                <table id="gcalctool-TBL-num-base" frame="all">
                  <title>Определяне на бройната система</title> 
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Двоична основа</para> </entry>
                             <entry><para><guibutton>Дво</guibutton></para></entry>
                             <entry><para>Настройва бройната система на двоична, тоест с основа 2.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Осмична основа</para> </entry>
                             <entry><para><guibutton>Осм</guibutton></para></entry>
                             <entry><para>Настройва бройната система на осмична, тоест с основа 8.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Десетична основа</para> </entry>
                             <entry><para><guibutton>Дес</guibutton></para></entry>
                             <entry><para>Sets the numeric base to decimal, that is, base 10. Decimal is the default numeric base. If you change from Programming mode to another mode, <application>gcalctool</application> automatically sets the numeric base to decimal.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Шестнайсетична основа</para> </entry>
                             <entry><para><guibutton>Шес</guibutton></para></entry>
                             <entry><para>Настройва бройната система на шестнайсетична, тоест с основа 16.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-word-length">
      <title>To Set the Word Length</title>
      <para>The word length can be altered, to make the bitwise functions behave differently. To set the word length, select one of the buttons described in <xref linkend="gcalctool-TBL-word-length"/>. </para>
                <table id="gcalctool-TBL-word-length" frame="all">
                  <title>Setting the Word Length</title>
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>64 bit word</para> </entry>
                             <entry><para><guibutton>64 bit</guibutton></para></entry>
                             <entry><para>Sets the word length to 64 bits. 64 bits is the default word length.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>32 bit word</para> </entry>
                             <entry><para><guibutton>32 bit</guibutton></para></entry>
                             <entry><para>Sets the word length to 32 bits.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>16 bit word</para> </entry>
                             <entry><para><guibutton>16 bit</guibutton></para></entry>
                             <entry><para>Sets the word length to 16 bits.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-calc-bit-manipulation-ext">
      <title>To Perform Bit Manipulations on Integers</title>
      <para>If the calculator display shows an integer value, then each of the bits in that integer value is displayed as a collection of 0s and 1s in the Bit Editor. By clicking on any of these individual bits, their value can be toggled, causing the displayed integer value to be adjusted accordingly.</para>
    </sect3>
    <sect3 id="gcalctool-logic-calc"> 
      <title>Извършване на побитови пресмятания</title> 
      <para>За използвате побитови пресмятания, използвайте бутоните описани в <xref linkend="gcalctool-TBL-logic-calc"/>.</para>
                <table id="gcalctool-TBL-logic-calc" frame="all">
                  <title>Извършване на побитови пресмятания</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Побитово ИЛИ</para> </entry>
                             <entry><para><guibutton>OR</guibutton></para></entry>
                             <entry><para>Performs a bitwise OR operation on the current value in the display area and the next number that you enter.</para></entry>
                             <entry><para>10001000 <guibutton>OR</guibutton> 00010001</para></entry>
                             <entry><para>10011001</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Побитово И</para> </entry>
                             <entry><para><guibutton>AND</guibutton></para></entry>
                             <entry><para>Performs a bitwise AND operation on the current value in the display area and the next number that you enter.</para></entry>
                             <entry><para>10101010 <guibutton>AND</guibutton> 00110011</para></entry>
                             <entry><para>100010</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Побитово Не</para> </entry>
                             <entry><para><guibutton>NOT</guibutton></para></entry>
                             <entry><para>Performs a bitwise NOT operation on the current value in the display area, using the word size configured in <xref linkend="gcalctool-word-length"/>.</para></entry>
                             <entry><para><guibutton>NOT</guibutton> 1357ACE</para></entry>
                             <entry><para>FECA8531</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Побитово XOR</para> </entry>
                             <entry><para><guibutton>XOR</guibutton></para></entry>
                             <entry><para>Performs a bitwise XOR operation on the current value in the display area and the next number that you enter.</para></entry>
                             <entry><para>1100 <guibutton>XOR</guibutton> 1010</para></entry>
                             <entry><para>110</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Побитово XNOR</para> </entry>
                             <entry><para><guibutton>XNOR</guibutton></para></entry>
                             <entry><para>Performs a bitwise XNOR operation on the current value in the display area and the next number that you enter.</para></entry>
                             <entry><para>1100 <guibutton>XNOR</guibutton> 1010</para></entry>
                             <entry><para>1001</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-num-manip"> 
      <title>Манипулиране на двоични числа</title> 
      <para>За да манипулирате двоични числа, използвайте бутоните описани в <xref linkend="gcalctool-TBL-num-manip"/>.</para>
                <table id="gcalctool-TBL-num-manip" frame="all">
                  <title>Манипулиране на двоични числа</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Ляв Shift <replaceable>n</replaceable></para> </entry>
                             <entry><para><guibutton>&lt;</guibutton></para></entry>
                             <entry><para>Shifts the current value in the display area, the specified number of places to the left. Click <guibutton>&lt;</guibutton>, then select the number of shift places from the popup menu. The number can be shifted up to 15 places left. </para></entry>
                             <entry><para>111 <guibutton>&lt;</guibutton><guilabel>1·позиция</guilabel></para></entry>
                             <entry><para>1110</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Десен Shift <replaceable>n</replaceable></para> </entry>
                             <entry><para><guibutton>&gt;</guibutton></para></entry>
                             <entry><para>Shifts the current value in the display area, the specified number of places to the right. Click <guibutton>&gt;</guibutton>, then select the number of shift places from the popup menu. The number can be shifted up to 15 places right.</para></entry>
                             <entry><para>1011 <guibutton>&gt;</guibutton><guilabel>1 позиция</guilabel></para></entry>
                             <entry><para>101 </para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Truncating a number</para> </entry>
                             <entry><para><guibutton>Trunc</guibutton></para></entry>
                             <entry><para>Truncates the current value in the display area to the word size configured in <xref linkend="gcalctool-word-length"/>.</para></entry>
                             <entry><para>FFFFFFFFFF <guibutton>Trunc</guibutton></para></entry>
                             <entry><para>FFFFFFFF</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Get the 1's complement</para> </entry>
                             <entry><para><guibutton>1's</guibutton></para></entry>
                             <entry><para>Calculates the 1's complement for the current value in the display area, using the word size configured in <xref linkend="gcalctool-word-length"/>.</para></entry>
                             <entry><para>D723 <guibutton>1's</guibutton></para></entry>
                             <entry><para>FFFF28DC</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Get the 2's complement</para> </entry>
                             <entry><para><guibutton>2's</guibutton></para></entry>
                             <entry><para>Calculates the 2's complement for the current value in the display area, using the word size configured in <xref linkend="gcalctool-word-length"/>.</para></entry>
                             <entry><para>D723 <guibutton>2's</guibutton></para></entry>
                             <entry><para>FFFF28DD</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
      <para>Ако използвате бързи клавиши, може да използвате клавиатурата, за да определите броя на местата, които да се преместят, както е показано в следните примери:</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>Въвеждане от клавиатурата</para></entry>
              <entry colname="COLSPEC1">
                <para>Описание</para></entry>
            </row>
          </thead>
          <tbody>
            <row valign="top">
              <entry><para><keycap>&lt;</keycap> <keycap>4</keycap></para></entry>
              <entry><para>Премества текущата двоична стойност в района на преглед с четири места на ляво.</para></entry>
            </row>
            <row valign="top">
              <entry><para><keycap>&gt;</keycap> <keycap>4</keycap></para></entry>
              <entry><para>Премества текущата двоична стойност в района на преглед 4 места надясно.</para></entry>
            </row>
          </tbody> 
        </tgroup>
      </informaltable>

    </sect3>
        <sect3 id="gcalctool-misc-prog">
      <title>To Perform Miscellaneous Programming Calculations</title> 
      <para>To perform miscellaneous programming calculations, use the buttons described in <xref linkend="gcalctool-TBL-misc-prog"/>. </para>
                <table id="gcalctool-TBL-misc-prog" frame="all">
                  <title>Performing Miscellaneous Programming Calculations</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Описание</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Пример</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>Резултат</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Шестнайсетични числа</para> </entry>
                             <entry><para>от <guibutton>A</guibutton> до <guibutton>F</guibutton> включително</para></entry>
                             <entry><para>Тези числа са налични само в шестнайсетична бройна система.</para></entry>
                             <entry><para><guibutton>B</guibutton></para></entry>
                             <entry><para>B</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
         </sect3>
    </sect2>
<!-- ============= Undo and Redo ======================== -->
  <sect2 id="gcalctool-undo-redo">
    <title>To Undo and Redo</title>
                <para>To undo your previous action, choose
                  <menuchoice>
                         <guimenu>Edit</guimenu>
                         <guimenuitem>Undo</guimenuitem>
                  </menuchoice>.  You can undo up to 15 past actions.</para>
                <para>If you want to redo an action you have just undone, choose
                  <menuchoice>
                         <guimenu>Edit</guimenu>
                         <guimenuitem>Redo</guimenuitem>
                  </menuchoice>. You can redo up to 15 undone actions.</para>
  </sect2>
<!-- ============= Quitting ============================= -->
  <sect2 id="gcalctool-quit"> 
    <title>Затваряне на програмата</title> 
                <para>To quit <application>gcalctool</application>, choose
                  <menuchoice>
                         <guimenu>Calculator</guimenu>
                         <guimenuitem>Quit</guimenuitem>
                  </menuchoice>.  </para>
                <para>When you quit <application>gcalctool</application>, the current values of the following settings are stored and automatically applied the next time you start <application>gcalctool</application>: </para>
                  <itemizedlist>
                    <listitem><para>Режим: <link linkend="gcalctool-basic-mode">Основен</link>, <link linkend="gcalctool-advanced-mode">Разширен</link>, <link linkend="gcalctool-financial-mode">Финансов</link> или <link linkend="gcalctool-scientific-mode">Научен</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-set-acc">Точност</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-mem-reg">Memory Registers window</link> displayed or not displayed, plus the contents of each memory register</para></listitem>
                    <listitem><para><link linkend="gcalctool-num-base">Бройна система</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-display-type">Вид на изгледа</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-trig-type">Тригонометричен тип</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-set-acc">Показване на крайните нули</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-calc-functions-separator">Показване на разделителя за хилядите</link></para></listitem>
                  </itemizedlist>
  </sect2>
  </sect1>
<!-- ============= Technical Information ============================= -->
  <sect1 id="gcalctool-tech-info">
         <title>Техническа информация</title>

         <sect2 id="gcalctool-recognize-error">
                <title>Условия за грешка</title>
                <para>If you perform an invalid calculation, <application>gcalctool</application> indicates the error condition as follows:
<itemizedlist>
<listitem><para>Показва думата <literal>Грешка</literal> в района на преглед.</para></listitem>
<listitem><para>Показва съобщение за грешка в лентата за състоянието.</para></listitem>
<listitem><para>Прави неналични всички калкулаторни бутони, освен <guibutton>Изч</guibutton>.</para></listitem>
<listitem><para>Прави всички калкулаторни опции да бъдат неналични.</para></listitem>
<listitem><para>Прави всички елементи от менюто на калкулатора неналични, с изключение на <menuchoice><guimenu>Калкулатор</guimenu><guimenuitem>Напускане</guimenuitem></menuchoice> и <menuchoice><guimenu>Помощ</guimenu><guimenuitem>Ръководство</guimenuitem></menuchoice>.</para></listitem>
</itemizedlist>
</para>
<para>To clear the error condition, click <guibutton>Clr</guibutton> or press <keycombo><keycap>Shift</keycap><keycap>Delete</keycap></keycombo>.</para>
         </sect2>

         <sect2 id="gcalctool-change-modes">
                <title>Changing Modes</title>
                <para>If the user tries to change modes when a partial
calculation is being displayed, a warning dialog is displayed, telling
the user that the current calculation will be cleared, and the base will 
be reset to decimal.</para>
                <para>There is a checkbox present, that if checked, prevents the dialog from being shown again.</para>
                <para>If the user presses the <guibutton>Cancel</guibutton> button, the change mode operation is cancelled. If the user presses the <guibutton>Change Mode</guibutton> button, the mode is changed and has the following side-effects:
<itemizedlist>
<listitem><para>Clears the display.</para></listitem>
   <listitem><para>Sets the base to decimal.</para></listitem>
   <listitem><para>Sets the numeric display to fixed.</para></listitem>
   <listitem><para>Sets the accuracy to nine places after the numeric point.</para></listitem>
   <listitem><para>Clears the display of the thousands separator.</para></listitem>
   <listitem><para>Clears the display of trailing zeroes after the numeric point.</para></listitem>
   <listitem><para>Dismisses the register window if the new mode is Basic.</para></listitem>
</itemizedlist>
</para>
         </sect2>

         <sect2 id="gcalctool-changing-display-area">
                <title>Changing The Display Area</title>
                <para>It is possible to use the mouse to click on the display area and edit it.</para>
                <para>All the normal keyboard shortcuts will work, plus the addition of:
<itemizedlist>
    <listitem><para><keycombo><keycap>Ctrl</keycap><keycap>Delete</keycap></keycombo> which will delete the character to the right of the text cursor</para></listitem>
    <listitem><para><keycap>Home</keycap> which moves the text cursor to the beginning of the display area</para></listitem> 
    <listitem><para><keycap>End</keycap> which moves the text cursor to the end of the display area</para></listitem> 
</itemizedlist>
</para>
         </sect2>

  </sect1>
<!-- ============= Keyboard Shortcuts ============================= -->
  <sect1 id="gcalctool-keyboard-shortcut"> 
    <title>Бърза справка: Бързи клавиши</title> 
                <para><xref linkend="gcalctool-TBL-keyboard-shortcut-button"/>, <xref linkend="gcalctool-TBL-keyboard-shortcut-sci-options"/>, and <xref linkend="gcalctool-TBL-keyboard-shortcut-menu"/> provide a quick reference for all of the <application>gcalctool</application> keyboard shortcuts.</para>
                <para>When you use the keyboard shortcut for any of the calculator
                      buttons that have a menu associated with them, that menu is displayed.
                      You can then use the arrow keys to select a menu item or the menu item's shortcut.</para>
                <table id="gcalctool-TBL-keyboard-shortcut-button" frame="all">
                  <title>Quick Reference for Keyboard Shortcuts of <application>gcalctool</application> Buttons</title> 
                  <tgroup cols="4" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Бързи клавиши</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Бутон</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Вижте</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>от <keycap>0</keycap> до <keycap>9</keycap> включително</para></entry>
                             <entry><para>от <guibutton>0</guibutton> до <guibutton>9</guibutton> включително</para></entry>
                             <entry><para>Цифрови</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>A</keycap> </para></entry>
                             <entry><para><guibutton>Точ</guibutton> </para></entry>
                             <entry><para>Точност</para> </entry>
                             <entry><para><xref linkend="gcalctool-set-acc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>a</keycap> </para></entry>
                             <entry><para><guibutton>A</guibutton> </para></entry>
                             <entry><para>Шестадесетични числа</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>b</keycap> </para></entry>
                             <entry><para><guibutton>B</guibutton> </para></entry>
                             <entry><para>Шестадесетични числа</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>C</keycap></para></entry>
                             <entry><para><guibutton>+/-</guibutton></para></entry>
                             <entry><para>Промяна на аритметичния знак</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>c</keycap> </para></entry>
                             <entry><para><guibutton>C</guibutton> </para></entry>
                             <entry><para>Шестадесетични числа</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>D</keycap></para></entry>
                             <entry><para><guibutton>ДПО</guibutton></para></entry>
                             <entry><para>Двойно-понижаващо обезценяване</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>d</keycap> </para></entry>
                             <entry><para><guibutton>D</guibutton> </para></entry>
                             <entry><para>Шестадесетични числа</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>E</keycap> </para></entry>
                             <entry><para><guibutton>Екс</guibutton> </para></entry>
                             <entry><para>Експонента</para> </entry>
                             <entry><para><xref linkend="gcalctool-enter-exp"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>e</keycap> </para></entry>
                             <entry><para><guibutton>E</guibutton> </para></entry>
                             <entry><para>Шестадесетични числа</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>F</keycap> </para></entry>
                             <entry><para><guibutton>Фнк</guibutton> </para></entry>
                             <entry><para>Функция</para> </entry>
                             <entry><para><xref linkend="gcalctool-edit-func"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>f</keycap> </para></entry>
                             <entry><para><guibutton>F</guibutton> </para></entry>
                             <entry><para>Шестадесетични числа</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>G</keycap></para></entry>
                             <entry><para>10<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>10 на степен <replaceable>x</replaceable></para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>g</keycap></para></entry>
                             <entry><para><guibutton>Лог</guibutton></para></entry>
                             <entry><para>Common base 10 logarithm</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logs-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>H</keycap></para></entry>
                             <entry><para>2<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>2 to the <replaceable>x</replaceable> power</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>h</keycap></para></entry>
                             <entry><para>Log<subscript>2</subscript></para></entry>
                             <entry><para>Common base 2 logarithm</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logs-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>I</keycap></para></entry>
                             <entry><para><guibutton>Gpm</guibutton></para></entry>
                             <entry><para>Gross Profit Margin</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>i</keycap></para></entry>
                             <entry><para><guibutton>Цел</guibutton></para></entry>
                             <entry><para>Целочислена част</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>J</keycap></para></entry>
                             <entry><para>Cos<superscript>-1</superscript></para></entry>
                             <entry><para>Inverse Cosine</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>j</keycap></para></entry>
                             <entry><para><guibutton>Кос</guibutton></para></entry>
                             <entry><para>Косинус</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>K</keycap></para></entry>
                             <entry><para>Sin<superscript>-1</superscript></para></entry>
                             <entry><para>Inverse Sine</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>k</keycap></para></entry>
                             <entry><para><guibutton>Син</guibutton></para></entry>
                             <entry><para>Синус</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>l</keycap></para></entry>
                             <entry><para><guibutton>ОПЛ</guibutton></para></entry>
                             <entry><para>Обезценяване на права линия</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>M</keycap></para></entry>
                             <entry><para><guibutton>Mod</guibutton></para></entry>
                             <entry><para>Modulus Division</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>m</keycap></para></entry>
                             <entry><para><guibutton>УсПо</guibutton></para></entry>
                             <entry><para>Срок на погасяване</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>N</keycap></para></entry>
                             <entry><para>e<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>e на степен <replaceable>x</replaceable></para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>n</keycap></para></entry>
                             <entry><para><guibutton>НЛ</guibutton></para></entry>
                             <entry><para>Натурален логаритъм</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logs-calc"/></para> </entry>
                           </row>
                                                   <row valign="top">
                                                         <entry><para><keycap>O</keycap></para></entry>
                             <entry><para><replaceable>x</replaceable><superscript>1/<replaceable>y</replaceable></superscript></para></entry>
                             <entry><para>x to the reciprocal<replaceable>y</replaceable> power</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>o</keycap> or <keycap>^</keycap></para></entry>
                             <entry><para><replaceable>x</replaceable><superscript><replaceable>y</replaceable></superscript></para></entry>
                             <entry><para>x на степен <replaceable>y</replaceable></para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>P</keycap></para></entry>
                             <entry><para><guibutton>ППл</guibutton></para></entry>
                             <entry><para>Периодично разплащане</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>p</keycap></para></entry>
                             <entry><para><guibutton>ТСт</guibutton></para></entry>
                             <entry><para>Настояща стойност</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>R</keycap></para></entry>
                             <entry><para><guibutton>Пос</guibutton></para></entry>
                             <entry><para>Извличане на стойност от паметов регистър</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-mem-reg"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>r</keycap></para></entry>
                             <entry><para><guibutton>1/<replaceable>x</replaceable></guibutton></para></entry>
                             <entry><para>Реципрочност</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>S</keycap></para></entry>
                             <entry><para><guibutton>Пам</guibutton></para></entry>
                             <entry><para>Запазване на стойност в паметов регистър</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-mem-reg"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>s</keycap></para></entry>
                             <entry><para><guibutton>кркв</guibutton></para></entry>
                             <entry><para>Корен квадратен</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>T</keycap></para></entry>
                             <entry><para><guibutton>Лихва</guibutton></para></entry>
                             <entry><para>Периодична лихва</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>t</keycap></para></entry>
                             <entry><para><guibutton>Срок</guibutton></para></entry>
                             <entry><para>Период на разплащане</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>u</keycap></para></entry>
                             <entry><para><guibutton>Абс</guibutton></para></entry>
                             <entry><para>Абсолютна стойност</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>v</keycap></para></entry>
                             <entry><para><guibutton>бст</guibutton></para></entry>
                             <entry><para>Бъдеща стойност</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>W</keycap></para></entry>
                             <entry><para>Tan<superscript>-1</superscript></para></entry>
                             <entry><para>Inverse Tan</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>w</keycap></para></entry>
                             <entry><para><guibutton>Тан</guibutton></para></entry>
                             <entry><para>Тан</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>X</keycap></para></entry>
                             <entry><para><guibutton>Зам</guibutton></para></entry>
                             <entry><para>Замяна на стойността в паметовия регистър и стойността в района на преглед</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-mem-reg"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>x</keycap></para></entry>
                             <entry><para><guibutton>Xor</guibutton></para></entry>
                             <entry><para>Побитово XOR</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>Y</keycap></para></entry>
                             <entry><para><guibutton>Амо</guibutton></para></entry>
                             <entry><para>Амортизация като сума на обезценяването</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>Z</keycap></para></entry>
                             <entry><para><guibutton>2's</guibutton></para></entry>
                             <entry><para>2's complement</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>z</keycap></para></entry>
                             <entry><para><guibutton>1's</guibutton></para></entry>
                             <entry><para>1's complement</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>!</keycap></para></entry>
                             <entry><para><guibutton><replaceable>x</replaceable>!</guibutton></para></entry>
                             <entry><para><replaceable>x</replaceable> факториел</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>#</keycap> </para></entry>
                             <entry><para><guibutton>Кон</guibutton> </para></entry>
                             <entry><para>Константна стойност</para> </entry>
                             <entry><para><xref linkend="gcalctool-edit-const"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>%</keycap></para></entry>
                             <entry><para><guibutton>%</guibutton></para></entry>
                             <entry><para>Процент</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>&amp;</keycap></para></entry>
                             <entry><para><guibutton>И</guibutton></para></entry>
                             <entry><para>Побитово И</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>(</keycap> и <keycap>)</keycap></para></entry>
                             <entry><para><guibutton>(</guibutton> и <guibutton>)</guibutton></para></entry>
                             <entry><para>Скоби</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>*</keycap></para></entry>
                             <entry><para><guibutton>*</guibutton></para></entry>
                             <entry><para>Умножение</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>+</keycap></para></entry>
                             <entry><para><guibutton>+</guibutton></para></entry>
                             <entry><para>Събиране</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>-</keycap></para></entry>
                             <entry><para><guibutton>-</guibutton></para></entry>
                             <entry><para>Изваждане</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>.</keycap></para></entry>
                             <entry><para><guibutton>.</guibutton></para></entry>
                             <entry><para>Десетична запетая</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>/</keycap></para></entry>
                             <entry><para><guibutton>/</guibutton></para></entry>
                             <entry><para>Делене</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>:</keycap></para></entry>
                             <entry><para><guibutton>Дроб</guibutton></para></entry>
                             <entry><para>Дробна част</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>&lt;</keycap></para></entry>
                             <entry><para><guibutton>&lt;</guibutton></para></entry>
                             <entry><para>Ляв Shift <replaceable>n</replaceable></para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>=</keycap> или <keycap>Enter</keycap></para></entry>
                             <entry><para><guibutton>=</guibutton></para></entry>
                             <entry><para>Пресмятане на резултат</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>&gt;</keycap></para></entry>
                             <entry><para><guibutton>&gt;</guibutton></para></entry>
                             <entry><para>Десен shift <replaceable>n</replaceable></para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>?</keycap></para></entry>
                             <entry><para><guibutton>Случ</guibutton></para></entry>
                             <entry><para>Генериране на произволни числа</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>@</keycap></para></entry>
                             <entry><para><replaceable>x</replaceable><superscript>2</superscript></para></entry>
                             <entry><para>Квадрат</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>{</keycap></para></entry>
                             <entry><para><guibutton>Xnor</guibutton></para></entry>
                             <entry><para>Побитово XNOR</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>[</keycap></para></entry>
                             <entry><para><guibutton>Trunc</guibutton></para></entry>
                             <entry><para>Truncates the number</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>|</keycap></para></entry>
                             <entry><para><guibutton>Или</guibutton></para></entry>
                             <entry><para>Побитово ИЛИ</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>~</keycap></para></entry>
                             <entry><para><guibutton>Не</guibutton></para></entry>
                             <entry><para>Побитово Не</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>Backspace</keycap></para></entry>
                             <entry><para><guibutton>Bksp</guibutton></para></entry>
                             <entry><para>Backspace</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-erase-char"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>Esc</keycap> или</para>
                                    <para><keycombo><keycap>Ctrl</keycap><keycap>Backspace</keycap></keycombo></para></entry>
                             <entry><para><guibutton>CE</guibutton></para></entry>
                             <entry><para>Изчистване на запис</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-erase-char"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Shift</keycap><keycap>Delete</keycap></keycombo></para></entry>
                             <entry><para><guibutton>Изч</guibutton></para></entry>
                             <entry><para>Изчистване</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-erase-char"/></para> </entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
                <table id="gcalctool-TBL-keyboard-shortcut-sci-options" frame="all">
                  <title>Quick Reference for Keyboard Shortcuts of <application>gcalctool</application> Scientific Mode Options</title> 
                  <tgroup cols="4" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Бързи клавиши</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Опция</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Вижте</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>1</keycap></keycombo></para></entry>
                             <entry><para><guilabel>16 bit</guilabel></para></entry>
                             <entry><para>Set the word size to 16 bits.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-word-length"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>3</keycap></keycombo></para></entry>
                             <entry><para><guilabel>32 bit</guilabel></para></entry>
                             <entry><para>Set the word size to 32 bits.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-word-length"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>6</keycap></keycombo></para></entry>
                             <entry><para><guilabel>64 bit</guilabel></para></entry>
                             <entry><para>Set the word size to 64 bits.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-word-length"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>a</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Градиани</guilabel></para></entry>
                             <entry><para>Настройване на тригонометричния тип към градиани</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>b</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Дво</guilabel></para></entry>
                             <entry><para>Настройва бройната система към двоична.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-base"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>d</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Дес</guilabel></para></entry>
                             <entry><para>Настройване на бройната система към десетична</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-base"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>f</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Фик</guilabel></para></entry>
                             <entry><para>Настройване на вида изглед към фиксирана точка</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-display-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>g</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Градуси</guilabel></para></entry>
                             <entry><para>Настройване на тригонометричния тип към градуси.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>i</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Инв</guilabel></para></entry>
                             <entry><para>Изберете обръщащата опция за използване с тригонометричните функции.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-options"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>n</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Инж</guilabel></para></entry>
                             <entry><para>Настройва вида на изгледа към инженерен формат.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-display-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>o</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Осм</guilabel></para></entry>
                             <entry><para>Настройва бройната система към осмична.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-base"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>r</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Радиани</guilabel></para></entry>
                             <entry><para>Настройване на тригонометричния тип към радиани.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>s</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Нау</guilabel></para></entry>
                             <entry><para>Настройване на изгледа към научен формат</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-display-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>x</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Шес</guilabel></para></entry>
                             <entry><para>Настройване на бройната система към шестнайсетична</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-base"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>y</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Хип</guilabel></para></entry>
                             <entry><para>Изберете хиперболичната опция за използване с тригонометричните функции.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-options"/></para> </entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
                <table id="gcalctool-TBL-keyboard-shortcut-menu" frame="all">
                  <title>Quick Reference for Keyboard Shortcuts of <application>gcalctool</application> Menu Items</title> 
                  <tgroup cols="4" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>Бързи клавиши</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>Елемент от меню</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>Функция</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>Вижте</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>b</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Изглед</guimenu> <guimenuitem>Основен</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Преминаване към Основен режим</para> </entry>
                             <entry><para><xref linkend="gcalctool-basic-mode"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>c</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Редактиране</guimenu> <guimenuitem>Копиране</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Копиране на текущата стойност от района на преглед във временната памет</para> </entry>
                             <entry><para><xref linkend="gcalctool-calc-functions"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>f</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Изглед</guimenu> <guimenuitem>Финансов</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Преминаване към Финансов режим</para> </entry>
                             <entry><para><xref linkend="gcalctool-financial-mode"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>h</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Помощ</guimenu> <guimenuitem>Ръководство</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Display the <application>gcalctool</application> online help </para> </entry>
                             <entry><para><xref linkend="gcalctool-intro"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>i</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Редактиране</guimenu> <guimenuitem>Вмъкване на ASCII стойност</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Показване на прозореца за <guilabel>Вмъкване на·стойност на ASCII</guilabel></para> </entry>
                             <entry><para><xref linkend="gcalctool-ins-ascii"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>k</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Изглед</guimenu> <guimenuitem>Показване на разделителя за хилядите</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Показване на разделителя за хилядите</para> </entry>
                             <entry><para><xref linkend="gcalctool-calc-functions-separator"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>m</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Изглед</guimenu> <guimenuitem>Паметови регистри</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Показване на прозореца за <guilabel>Паметови регистри</guilabel></para> </entry>
                             <entry><para><xref linkend="gcalctool-mem-reg"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>p</keycap></keycombo></para></entry>
                                                         <entry><para> <menuchoice> <guimenu>Изглед</guimenu> <guimenuitem>Programming</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Change to Programming mode</para> </entry>
                             <entry><para><xref linkend="gcalctool-programming-mode"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>q</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Калкулатор</guimenu> <guimenuitem>Напускане</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Quit the <application>gcalctool</application> application</para> </entry>
                             <entry><para><xref linkend="gcalctool-quit"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>s</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Изглед</guimenu> <guimenuitem>Научен</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Преминаване към Научен режим</para> </entry>
                             <entry><para><xref linkend="gcalctool-scientific-mode"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>t</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Изглед</guimenu> <guimenuitem>Показване на крайните нули</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Показване на завършващите нули</para> </entry>
                             <entry><para><xref linkend="gcalctool-set-acc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>v</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Редактиране</guimenu> <guimenuitem>Поставяне</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Поставя текущата стойност от временната памет в района на преглед.</para> </entry>
                             <entry><para><xref linkend="gcalctool-calc-functions"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>z</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Редактиране</guimenu> <guimenuitem>Undo</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Undo previous action</para> </entry>
                             <entry><para><xref linkend="gcalctool-undo-redo"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Shift</keycap><keycap>Ctrl</keycap><keycap>z</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>Редактиране</guimenu> <guimenuitem>Redo</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Redo an undone action</para> </entry>
                             <entry><para><xref linkend="gcalctool-undo-redo"/></para> </entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
  </sect1>
</article>
