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animate on linux/unix

Dear Ferret Users,

another problem is -- thank's to Kevin O'Brien -- solved. Since it might be of 
interest to others, here are the description and the solution:

Problem: Using a command sequence like (or similar to)
      repeat/l=1:10/animate shade data
(ferret 5.40) shows only the first frame.
All other frames of the sequence are empty pages.

Reason: The xserver option 'backing-store' is probably disabled.
        options:    backing-store NO, save-unders NO
However, it should return
        options:    backing-store YES, save-unders YES
for successful animations.

Add '+bs' to enable backing-store in the file 
to the line where the X-server is started, e.g.:
       :0 local /usr/X11R6/bin/X +bs :0 vt07
Then restart your X-server.

Good luck!


         Patrick Jöckel

Dr. Patrick Joeckel
Max Planck Institute for Chemistry
Joh.-J. Becher Weg 27         
55128 Mainz                   phone:++49-6131-305452      
Germany                       fax  :++49-6131-305436     
Never trust an operating system you don't have sources for.

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