delete page, thx [Fabricio Rocha] - 26 Aug 2011 - Why? The text was rather confusing indeed, but the concept is interesting. Some days ago I was thinking about how could Tk [canvas] be used for creating interfaces in [Hypercard] style -- having one or more "background" images, such as a school notebook or an airplane cockpit, over which one could create a "layer" of clickable areas (buttons), selectable/clickable text (listboxes and alikes) and "fields" for user keyboard input. I am not sure this could be called a new "geometry manager", but it might be somehow used like one...