You can delete a raster line, arc, or circle that you define as a primitive object.
AutoCAD Raster Design toolset automatically detects the geometry of the selected raster entity (line, arc, or circle) and immediately deletes the entity. When you remove the entity, AutoCAD Raster Design toolset automatically cleans up intersections with other raster entities.
You can use raster snaps to assist in selecting the raster entity. For more information, see Raster Snapping.