The menu editor consists of the following commands:
        1 adds an item (can be a goto_menu, then asks owner,
          or any type asked from a list)
        2 removes an item (can be a goto_menu, the system will then
          ask if removing the branch is asked)
        3 tests the menu
        4 edit the welcome file
        * cancel changes
        # accept changes and back

For the menu editor to work, the file menu_item_types must be
installed in /usr/spool/voice. Version 1.0 did not install this file
automatically.
