TRIM allows you to trim selected entities to their
intersection with a user-defined plane.

Select the desired entities to trim, using a Selection 
Menu option.

Define the desired plane from the Plane Definition Menu.

An icon is displayed that illustrates the current position
and orientation of the new plane.

Using a Position Menu option indicate a side of the plane
on which the entities will remain the same. The system
identifies where the selected entity intersects the 
defined plane. If intersections are found, the entity 
is trimmed to the defined plane.
