FYI: Don’t judge the code in the following article part too harshly.  It’s all been written off-the-cuff.  I have not yet tried to save it out into a final app and make sure it runs.  That will be part of the polishing passes to come.  The main thing I want comment on is the overall ideas presented, not the niggly details.

I don’t mean that I do not welcome nit-picking, just that I prefer that you keep it brief.  Yes, I realize that the code probably doesn’t work as-is yet, and yes, I realize that I probably have committed spelling and grammar mistakes.  Kindly just point them out, without discussing how this pile of errors reflects on my ancestry. :)