Thanks, Hans-Christoph,
I've updated the site, .doc and pdf with everything you've suggested (being young and impressionable). (see www.earcatching.com/pdconv/)
I've also added the suggestion that sub-patches can be padded with underscores to make their box bigger, e.g. [subpatchExample______________________________]
Also, thanks to Roman for suggesting adding it to the webring. I couldn't believe how easy that was!
Trevor