I actually just htought of something..not related to these options. It's not too important to me anymore, though, but I am just curious.
When I used Windows (ZoomText), there was an option for a horizontal split-screen magnification where the bottom portion of the screen would be regular size and the top half would be magnified. This used to be my default setup, but when I came to Linux I began to love full-screen magnification. I don't really know why I never used it before now.
I was just curious as to whether or not a split screen magnification setup was possible, though.