systemdict begin

  % Autoload pie menus and tab windows

  openwinversion 0 get 51 eq
  dup { % V3?
    /TNT 3 0 findpackage begin
    currentdict beginautoload
  } if

  [ /ClassPieMenu				(tnt/win/pie.ps)
    /ClassPieMenuService			(tnt/win/pie.ps)
    /ClassPieMenuCanvas				(tnt/win/pie.ps)
    /ClassTabWindow				(tnt/win/tab.ps)
    /ClassTabBaseWindow				(tnt/win/tab.ps)
    /ClassTabPopupWindow			(tnt/win/tab.ps)
    /ClassPieMenuWindowManager			(tnt/win/tab.ps)
  ] DefineAutoLoads

  { % V3?
    currentdict endautoload end
  } if

end % systemdict