The initial position of the docking pane.
Namespace: Autodesk.Revit.UI
Assembly: RevitAPIUI (in RevitAPIUI.dll) Version: 25.0.0.0 (25.0.0.0)
public DockablePaneState InitialState { get; set; }
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.