Ok, I'm pretty sure cawf 4.10 is the last version of cawf. It's from 1996. The minix version I was playing with earlier is either 4.8 or 4.9.
(groff released in '97, pretty much made cawf pointless)
It was an easy port to RISC OS. I have a little bit of packaging to do yet but it's basically done.
Unfortunately it still can't deal with mandoc or mdoc manpages.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko