Area of the references that the MassSurfaceData provides properties for.
Namespace: Autodesk.Revit.DB.AnalysisAssembly: RevitAPI (in RevitAPI.dll) Version: 20.0.0.0 (20.0.0.377)
Since: 2012
Syntax
Remarks
If it is used, should be greater than zero. Otherwise, it will be zero.