What is an "internal Extender?" (KDE 4.2)

[Armin]

On Saturday 14 February 2009 01:58:24 Kevin Kofler wrote:
> homburg at tips-Q.com wrote:
> > Presumably it has nothing to do with sexual intimacy. At
> > least I hope not.
> >
> > Nevertheless, KDE 4.2 provides this widget. It puts a
> > large dot on the desktop that doesn't seem to do anything.
>
> I think the "internal" in the name is a hint that you shouldn't touch that
> thing. :-)
>
>         Kevin Kofler

yea, but really, what is it for?  I was wondering about it too!

-- 
Armin Moradi