Custom Handlers for Listers: Lister Pop-Ups If you have added menu items to the lister pop-up menu, accessed by using the LMB over the SRCE/DEST status display, then messages will be received when these menu items are chosen. The message arguments are:- Arg0 - "menu text" (the menu item text you added with 'dopus command' ext parameter) Arg1 - <handle> (lister handle)