Thanks Al, it sounds like you may be right, unfortunately, I no longer am in contact with the person who originally filled out the WPS and put in F10, so I can't ask him.
So I guess it's safe to say that unless it's an SMAW filler rod, one might be able to leave the F# section blank, since unless one has access to other manuals and or code books, they won't be able to determine the F number for other processes.
You would think the filler rod manufacturer would put it on the box w/ all the other info. It has the AWS category and specification # on the box, why don't they add the F number to make it easy. Maybe that's why, it would make it too easy.
Thanks Chris