[TUHS] daemons are not to be exorcised

[Paul Winalski]

Regarding comments, when I'm modifying code to fix a bug I find it
useful to insert a comment that references the bug's number in the bug
tracking system.  It can help answer the question "why is this code
here?" for someone reading the code later on, and sometimes it can
prevent regressions being introduced.

To bring this back to Unix, how well have the various commenting
principles we've been discussing been adhered to in the code base?

-Paul W.