This tool is used to clean up drawing geometry at the extents of a polyline boundary. It provides options to erase adjacent geometry as well as trim geometry crossing the fence of the polyline.
First, select the boundary polyline. Only one can be selected.
Designate the desired options in the following dialog. The top
section of the dialog allows you to toggle which object types
should be affected by the operation. Note that some of the objects,
such as text and inserts, cannot be trimmed.
In the middle of the dialog is a toggle that determines whether to prompt for objects to process. If you want to isolate the drawings contents to that of the selected polyline, turn this toggle on. Note that all geometry in the drawing is effected, even geometry that is outside of the current viewport. Many users will prefer to turn this toggle off, so that they can be prompted to manipulate the geometry.
The bottom row allows you to choose whether to erase all the entities on the inside or outside of the polyline.
Pulldown Menu Location: Edit > Erase
Keyboard Command: erasepline
Prerequisite: Entities and a closed polyline