Over the years, I have been emailed, or otherwise found some
fantastic articles on the Internet, and then all of a sudden, they were
no longer there. For this reason, I have reproduced the ones that I have
found useful and/or interesting here, either as a precaution, or
because the site or article in question has already vanished. I have
given credit as best I can in every instance. Unless otherwise stated, I
do NOT claim authorship of the articles in this section.