= sysreq for german keyboards =

A nice feature of linux to save your document or the like
without any response from X and/or terminal:

german keycodes in that order:
Alt + Shift + Druck (S-Abfr) + 
then release everything

Where  is one of:
S: sync data from mem to disc
U: unmount everything
B: Reboot

To get help press in that order:
Alt + Druck + Shift
(Warning: the next  might be executed)

This worked on 3.3.2009 on a thinkpad laptop
and on a german Samsung keyboard.