Additionally, when you use an ascii id (e.g. 'MAIN'), your window can be controlled from ARexx.
Of course all windows of your application must have unique ids.
Do not confuse
Window.MuiID with Notify.ID.
The ID you specify in Notify.ID is the one you use to
talk to MUI objects using commands like mui.Set()
or mui.Get(). It does not have anything to do with
the ID you set in