You can trim hatches, lines, polylines, arcs, circles, or any block-based content created from these types of linework or objects.
The trim line changes color after the second point is selected, as does all linework (except hatches) on the side of the trim line where the cursor is positioned.
All linework on the selected side of the trim line is removed. Boundaries for any closed polylines on the other side of the trim line are redrawn along the trim line.
Trimming a block