Comment 20 for bug 233901

Writing about how the prefs mechanism works is significantly different than
writing about how each pref affects the browser behavior. That is actually how
engineering and QA divide the pref bugs.

I think that we've got the prefs back-end material documented well in that bug,
so I'd like to separate the per file, per pref issues here.

Putting them all in one bug/document is just too messy. If you look at my
current draft document, you can see some (soon to be removed) comments about
specific prefs and pref files.