uudecode - permission denied

[Allott P]

Can someone please explain what I/we are doing wrong?
I find that to get uudecode to work, the file that I expect it
to create must already exist and have the 020 bit set in its mode.
Or uudecod states "file: Permission denied"

I think we have a normal issue of SUN-OS 3.4 (I think I've also seen it on
4.0) - I can not believe that this is correct behaviour.