BTW the correct technical term is "resume stain" (care of Scott Adams).
I'm also a long time SCO person, although I was working for IXI in Cambridge and we had virtually nothing to do with the SCO Unix side - well over 90% of our business was on RISC platforms. I did actually meet you once, although you won't remember :-) http://en.wikipedia.org/wiki/IXI_Limited
I will say that the techpubs group at SCO did a heck of a lot of work. SCO Unix distinguished itself from other Unix versions by being very friendly, even for administrators. In theory you could do everything from the GUI. And of course that also meant comprehensive usable documentation. SCO was the first company to license the NCSA Mosaic browser, with SCO's techpubs group using it for online help. In IXI we went way further than that, including adding scripting (TCL) and making it possible to combine help and preferences.
Many people do not know how SCO's business worked. When computers were a lot more expensive (think fridge sized boxes with a minimum cost of $100k) they weren't practical for small businesses (eg a dentist's office). There were 15,000 VARs who you could call if you were a small business and they'd bring in a several thousand dollar computer (typically Compaq), some terminals, tape backup system, the operating system (SCO) and software for managing the office. Since they usually charged a percentage of the goods, it didn't matter if the Unix cost $1,000. It was that side of things Caldera wanted to get into, rather than selling for $19 a copy at a store.
For many years if you wanted to run a pet cemetery, then the only management software was on SCO Unix.