Issue 6: Clearing scribble boundaries (firmware 1.6?-1.7)
I drew as close to the scribble boundaries as possible:
image. You can see, that at the top and at the bottom the boundaries are rather big.
Turning or inserting a new page clears the screen. But it seems, that on the left and right sides one can draw a bit over the boundaries so that the pixels are not cleared there and are still visible:
image.