Crop linework to a smaller area using a boundary you define. You can crop hatches, lines, polylines, arcs, circles, or blocks. Neither the linework to be cropped nor the linework that defines the new boundary needs to have closed boundaries. For example, you can either use a v-shaped polyline to crop a circle or a circle to crop a v-shaped polyline.
All of the originally selected linework outside the crop boundary is erased. If you choose to erase the crop boundary, boundaries are redrawn for any closed-boundary entities inside the crop area. But any open-boundary objects that have been cropped remain open.