Is there a way to create in the xml source code a dropdown arrow in a menu (like FTP menu,fe),or can i only change in the
customize dialogue after having created the menu?.
Where can i get more information about the keywords and parameters i can use in dopus xml?
Just make two menus, one with the arrow and one without, and compare the XML.
Thanks, you are a good teacher! Up to now i didn't consider to copy 'n paste the button into a textfile. 
are there dopus commands for the keys HOME, END, PGUP, and PGDN, which i can call in the xml code?
I don't think there are (unless my memory fails me).