Toggles the Perpendicular Snap on or off. When
set to ON, you can snap a new entity that you are drawing to point perpendicular
to another entity. You can snap a new entity to a point perpendicular to an arc,
circle, line, Polyline, and infinite line. To use this choose 'Settings Menu > Snap >
Perpendicular snap' or select icon
from snap toolbar.
To use Perpendicular snap
