You might notice that a rash of these pages appeared out of the
blue, many after the fact. I can blame that on several things.
First, I'm lazy. Two, I wrote up some of them and forgot to
put them up on the web (see #1). Three, I have disk problems
on my Linux box. Four, people who write paragraphs with
numbered sentences should go back and read Strunk & White.
Fell free to complain - that's the whole point.