TRM/EXT allows you to trim or extend entities to projected
intersections with other entities.

Trim or extend entities by choosing from the following
options:

FIRST - to trim/extend the first selected entity.

BOTH - to trim/extend two intersecting entities (excluding
circles) to each other.

DOUBLE - to trim/extend an entity (including circles)
to two entities. Select the portion of the entity you want
to keep.

DIVIDE - to trim/extend an entity (excluding circles) into
two separate entities. Select the portion of the entity 
you want to removed.

MODAL - to trim more than one entity to a selected entity.

POSITN - to trim or extend to a position using a Position
Menu option.
