The position of the run relative to the Up-direction path used to create the run. 
Namespace: Autodesk.Revit.DB.Architecture
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2013 
Syntax
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Remarks
 Only common runs(straight, spiral, winder) have location line justification. 
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.ExceptionsArgumentOutOfRangeException | When setting this property: A value passed for an enumeration argument is not a member of that enumeration | 
| Autodesk.Revit.ExceptionsInvalidOperationException | The stairs run is sketched so the data being set is not applicable. |