I was too hasty with my previous posting. You don't have to listen to a dull lecture in Russian (or is it Macedonian?) to learn about the Macedonian text of the Rosetta Stone! YouTube has an explanation in English at
www.youtube. com/watch? v=b8MyOV9- 7ZA&feature= related
It's well worth watching, if just for the graphics and really good Macedonian background music.
BTW, am I right that before this revolutionary discovery, the Demotic text and the Hieroglyphic text were considered essentially the same thing in two writing systems?
Dan