The document you’re looking for was here, but has been removed. It may return at some point in the future; if I decide otherwise, this error page will change to a more “permanent” one.
In the summer of 2012 I updated this site, rearranging a lot of the content and also removing a lot of cruft. (It’s amazing what can accumulate in ten years.) While some content was clearly beyond hope—not in keeping with the site’s new direction, or just irredeemably poor writing—there were other pages that might yet be brought up to my current standards. As I find the time to reevaluate them, I’ll make final decisions about whether to put them back up or to obliterate them permanently.