pitt.comp.general	Anything and everything about computing at pitt.
pitt.comp.sys.ibm-pc	IBM PC (and clones)-based computing at Pitt.
pitt.comp.sys.mac	Apple Macintosh computing at Pitt.
pitt.comp.sys.unix	UNIX-based computing at Pitt.
pitt.comp.sys.vms	VMS computing at Pitt.
pitt.config		Configuring/maintaining the pitt.* hierarchy.