binary documentation locking?

[Nick Papadonis]

Hi all,

Is there any mechanism in CVS to force a 
check outs 'read-only' for certain modules.  

I would like to have a documentation module such 
that code is initially checked out read-only.  When
a user wishes to edit a file, he uses 'cvs edit' and 
the file becomes read write.  No other user should be
abe to do a 'cvs edit' while someone else has a file
in 'edit' mode.

These requirements are because these documentation files
are binary.  I don't want more then one person to edit a
file and try to merge.

Any insight is appreciated.

Thanks

-- 
Nick