Area of the references that the MassSurfaceData provides properties for.
Namespace: Autodesk.Revit.DB.Analysis
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
Since: 2012
Syntax
Remarks
If it is used, should be greater than zero. Otherwise, it will be zero.