Model inconsistencies can cause unexpected results in Parametric Design and should usually be resolved before assigning constraints to a part. CLEANUP on MENU 3 checks parts for inconsistencies such as extra points and duplicated or stacked geometry; and optionally adjusts or removes the offending elements.

Parametric Design operates on drawing elements within its zone. The zone may contain an entire part or selected elements of a part. The ZONE commands, also found on MENU 3, select elements for the zone.