No such thing. If you're interested in the details you'll have to be more specific about what aspect you're interested in. Are you trying to make your graphics faster? In that case enable the preference
Yes, I try to make graphics faster on iPad. I am tempted to think the bottleneck are the bitblt operations of the damaged area, also the larger the whole canvas, the slower the rendering with the same sketch. I can try to reduce the number of damaged area.
Hilaire
#debugShowDamage and have a look at what is drawn when you change your model. Then add a profiler loop in your model which looks like this:
MessageTally spyOn:[ 1 to: 100 do:[:i| self changed. "whatever caused your model to change" World doOneCycleNow. "force redraw" ]. ].
At this point you should have an idea about where to look next.