- Trims the segment by a distance
to be constructed.

- Trims the segment to the projection of a
point to be constructed.

- Trims the segment to the intersection with a
line or a
circle to be constructed.
In case of multiple intersection points the segment is trimmed to
the nearest intersection point. To trim to a specific point the
command must be issued multiple times.

This command can only be used to trim segments. To extend segments see here.