APVSYS is great! I like it!
but I've seen a small problem when I use APVSYS_DEBUG
functionnality with cygwin or HP-UX.
On these O.S., the /dev/stderr does not exist.
So, I receive an error message coming from the DEBUG!
It can be a problem to debug environment on these O.S.
Could be nice to solve it
Again, congratulation for APVSYS