> I haven't read Pine's book, but the x's and y's switcheroo can be
> explained, I suppose, like this...
>
> On a mathematical graph, a larger x means further right, and a larger
> y means further up.  In a computer image, you have to remember, of
> course, larger y usually means further down.
>
> So, think of [0,3].  On an xy grid, that point would lie 3 units up on
> the vertical axis.
>
> For a multi-dimensional array [0,3] refers to the zeroth array, third
> item (or, first array and fourth item, depending on how your mind
> works).
>
> In your visual multi-dimensional array world map, that would be the
> fourth tile to the right, which would -- at least for most people --
> be the x dimension, and not the y.
>
> Hope that makes some sense,
> Todd

Mark, Todd,
Thanks for your time,
I really appreciate it!
jlc