Thanks for the links.

I've given the Wikipedia article a quick look, and it seems to be digestible, so I'll spend more time with it and hopefully learn something.

Your tutorial, on the other hand, looks like it's beyond both my technical competence and desire therefor. Thanks, though.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire