The Window menu is partly dynamic, and contains at most the alternatives File, Edit, Show, Zoom, Settings, Modules, Window and Help, once a window has been opened. Depending on the type of window you have opened, the number of alternatives varies, and the options available under each menu can also be different.
The Window menu in MONITOR with all the alternatives visible.
When the Program window is empty, the Window menu only contains the alternatives File, Settings, Modules and Help.