|  Built  | 
 Reference Lines can only be constrained to Reference Planes, Levels, Family Host, and other Reference Lines. 
 Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
 Syntax
 Syntax  Property Value
FailureDefinitionId See Also
 See Also