Input argument type for Rebar.GetCenterlineCurves method. Controls whether all curves of a multi-planar Rebar element are returned by GetCenterlineCurves, or only the curves in the primary plane. 
   Namespace:   Autodesk.Revit.DB.Structure  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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Members
| Member name | Description | 
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| IncludeAllMultiplanarCurves | Include all curves. | 
| IncludeOnlyPlanarCurves | Include only curves which lie in the Rebar's primary plane. |