TI-84+ Silver Edition (I know, its got a lot of memory, but KS83+ took a lot out of it still, but in retrospect, I have enough left to be content). Say, any way to get rid of the screen I'm playing when I quit instantly (I always get some part of it left behind for my graphing screen), and also, is there any way to make it so that you can use the calculator's draw feature to draw your levels?