At 23:42 28/12/00 -0500, Isaac Hollander wrote: I think I've got it. Please try this. 2000-12-30 Andy Piper <andy(a)xemacs.org&gt; * xlwtabs.c: remove assertion definitions and put them in lwlib-internal.h. This has the effect of enabling assertions which should have been done from the very start. (TabsShuffleRows): fix duff assertion. (PreferredSize3): use dimensions throughout. (PreferredSize2): ditto. (TabLayout): ditto. (DrawFrame): be clever about the enclosing frame if the child height is 0. (TabsResize): don't configure children that are no visible anyway. Make sure geometry calculations don't end up negative. * lwlib-internal.h: put in assertion definitions. andy -------------------------------------------------------------- Dr Andy Piper Principal Consultant, BEA Systems Ltd