The initial position of the docking pane. 
   Namespace:   Autodesk.Revit.UI  
  Assembly:   RevitAPIUI  (in RevitAPIUI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2014 
Syntax
| C# | 
|---|
   |  
| Visual Basic | 
|---|
   |  
| Visual C++ | 
|---|
   |  
Remarks
 This position will be used for the first Revit session in which the pane is registered; afterwards, the user is free to reposition the pane, and the user's saved position will be remembered in future sessions.