[Foci] command generates an ellipse with the foci specified.
For the prompt
"Specify the 1st focus"
,
"Specify the 2nd focus"
, specify the each focus of the ellipse to
generate.
Pressing M key, two foci points will be generated as point objects with the ellipse object.
For the prompt
"Specify the through point of the ellipse"
, specify the through point of
the ellipse.