Extends a line at one end by using its slope.
Number of the line to be extended. If
P, graphical picking is enabled and all remaining command fields are ignored
(valid only in the GUI).
Number of keypoint at the end of line
Distance that the line will be extended.
Specifies whether to keep the input entities:
Modify old line to use new keypoints and slopes.
Do not modify old line. New line will overlay old line and have unique keypoints.
Extends a line at one end by using its slope. Lines may be redefined only if not yet attached to an area. Line divisions are set to zero (use LESIZE, etc. to modify). Note that solid modeling in a toroidal coordinate system is not recommended.