From GeoGebra Manual
Note: The following only applies to the GeoGebra Desktop Version.
- Keyboard shortcut: Ctrl + N (MacOS: Cmd + N)
List of GeoGebra windows
If you have more than one GeoGebra window open, this menu item allows you to switch between these different windows.
- Note: This might be helpful when you are using GeoGebra as a presentation tool and want to have several GeoGebra files open at the same time as well as to toggle between them.