Angle by which both u- and v- gridlines of the division are rotated with respect to the natural u/v-const directions of the sketch plane. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2013