I have always thought of the x/y plane as being the sheet of graphpaper,
but that graph paper pasted up on the monitor. Therefore x is across the
monitor, y is up and down the monitor and z is out of the monitor, just like
it would be on that piece of graphpaper. To have it make sense to me, I use
right <-1.333,0,0> so that positive x is on the right, positive y is up and
positive z is towards me. I start of with my camera at +z, as if I were
looking down on the peice of graphpaper.

    Probably a really screwy way of doing it, but it makes sense to me.

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