When I started reading Plan9 documentation some years ago I noticed a lack of examples (a simple 9P file server being the most notorious one), until nemo's book appeared and I started to really play with the system. Then, I realized how naive^Wstupid I had been: Plan9 is *full* of examples. The source is there, grep is there (and src too!), what else do you need? I don't think any written-on-purpose example can explain file servers better than ramfs.c and its friends. That said, more and better documentation is always welcomed, of course.
Regards, -- - yiyus || JGL .