A script handler you can implement to override standard MoneyWorks behaviour.
Automatically called: When a window is closed. Use this to dispose any persistent data you may have created for the window (to "dispose" an array, assign 0 to it).
Use for: Cleaning up regardless of how the user closes the window (Cancel, OK, close box)
Specific Naming: You can and should implement an Close handler that is specific to the particular window ID of interest. e.g. Close:<WindowId>