"21.0 \"Saanen-pre4\" XEmacs Lucid (beta40)" C-x 2 C-x 3 C-x 2 _________ / | \ | D | |-C--| E | | | F| |-A--|-B--| | | | | \_________/ You can't move the left middle modeline (A) at all, but you can move the one adjacent to it (B) (which then moves the one you couldn't move (A)). When you move this divider(B), you can move the one above it (C) up, but not down. This gives it (C) a stair-step effect. Actually if you play for a while, it sometimes moves it (C) down a little, but not much. If you move a vertical divider (D) to the right so that the mouse is still in the window that shrinks (E), then it (E) will not shrink if the cursor is too far to the right (F). This doesn't happen when moving left. This make it hard to shrink the window all the way when moving the divider to the right. Thanks for the work on the vertical-dividers, -Jim