As much as I know. Windows OS and the most applications under Windows (BTW all MS Office apps) support using Shift+F10 keys combination in order to call the context menu (in addition to the mouse right button click and the [App] key). Is it possible to assign this combination to call the context menu in Atlantis?
Please consider, that some modern keyboard has no the [App] key and sometimes a user can not use the mouse, so Shift+F10 might be the only option to call the context menu.