pro pack? well, you lost me on that one, then ;) x is sideways in the poser universe. y is up and down, and z is forward/back. now which axis is 'twist' depends on which way your limb is pointing ;) i did some experiments once upon a time to try to get the shoulderblade/collarbones to bend better. i didn't have any success at all! if you got 'em to work better for you, then you're ahead of me :) yes, scott, you're babbling ;) the spheres really only matter where they intersect the body part and its parent.