More on this: 1) I see the problem even before cvs up to your last changes. 2) Activate previews and load the UserGuide. Wait a little to snippets to generate, and the top of the screen becomes mangled with some foreing row. This doesn't happend with 1.3.x 3) Load the attached (Garst's) testcase with previews activated. Same problem. Strangely enough, this _does_ happends with 1.3.x!
I'm almost sure 2) didn't happened right after my top_y() patch, because I specifically tested the UserGuide with previews activated (and also yourself, IIRC). Alfredo