Usage: SET MENU <Name of menu>
  Will set the MENU variable to the name of a menu which has
  been loaded with the MLOAD command.  When MENU is set, the 
  new menu will appear on the screen.  The key bound to
  ENTER_MENU is used to get into the menu. (default ^R)

See Also: 
  MLOAD
  BIND ENTER_MENU
