This method is called if this edit is installed in a mred:simple-menu-frame% and the frame is closed
If it returns #f closing the frame is cancelled.
![[previous]](../icons/left.gif){kind=icon}
![[up]](../icons/up.gif){kind=icon}
![[next]](../icons/right.gif){kind=icon}
![[contents]](../icons/contents.gif){kind=icon}
![[index]](../icons/index.gif){kind=icon}