Constrain Perpendicular (3D Only)
 
The SmartCursor automatically draws objects so that they are perpendicular to the working plane. The Constrain Perpendicular constraint is only active when the working plane is at an angle to the ground plane.

SmartCursor and Constraints : The Constraints Palette : Constrain Perpendicular (3D Only)

Nemetschek NA
Phone: 410.290.5114
Fax: 410.290.8050