This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
cat command appeared in Version 1 AT&T UNIX, not Version 6
Apparently the cat man page was the first written man page
Obtained from: A Quarter Century of UNIX, Peter H. Salus
[BUGS]
fix a typo