Also in my previous message I was wrong about the pixel size - it is when you move your mouse within 85 pixels of the edge that the auto-pan kicks in, which starts slowly at first and then will accelerate if you continue to move further towards the edge.

The 45 pixel thing is a zone that is set around your mouse when you first click down which does not have auto-pan set in it - this is so that auto-pan does not kick in instantly if you happen to initially start a pan nearby the edge zone.

- Michael