Preparation
Model inconsistencies can cause unexpected results in Parametric Design and should usually be resolved before assigning constraints to a part. The following buttons in the Modify group on the Parametric tab check parts for inconsistencies such as extra points and duplicated or stacked geometry; and optionally adjusts or removes the offending elements:
• 
Clean Pnt
Clean Pnt• 
Clean Duplicate
Clean Duplicate• 
Clean Stacked
Clean StackedParametric Design operates on drawing elements within its zone. The zone may contain an entire part or selected elements of a part. The buttons under 
Zone in the Modify group on the Parametric tab select elements for the zone.
Zone in the Modify group on the Parametric tab select elements for the zone.