of course, that's just the protocol, and to show the larger idea of the representation of things by name spaces (instead of ioctls and special system calls) would have to include section 3 (devices).
it's fairly pervasive.
--- Begin Message ---mostly section 4 of the manual, i'd have said, although there are a few in section 8 where the file service is incidental to the service (eg, cs and dns)
--- End Message ---
