[Fillet] command makes a fillet to existing curves.
For the prompt
"Spefify the 1st curve"
, specify an on-curve point around the end point
of fillet to generate.
Pressing R key, the dialogue box to input radius of the fillet will be showon.
Pressing T key, the trim option is toggled. When the trim option is valid, the protruded part of the filleted curve will be cut off.
Pressing J key, the combining option will be toggled. When this option is valid, the fillet curve and the filleted curve will be combined as a curve.
For the prompt
"Specify the 2nd curve"
, specify another on-curve point around the end
point of fillet to generate.