In the interest of completeness, ` DC.W $2F38,$09EE from the function I posted a couple emails ago, happens to mean: Move.l GrayRgn,-(a7) Which is the parameter for paintbehind. Just in case you were wondering. This happens to mean that my powerpc code doesn't do quite the same thing as the 68k assembly code, however, the net effect appears to be the same in testing so far. If any problems appear, let me know and I will change the function. -Derek (If it ain't broke...)