Jan nsakwish >Q.E.D. Wow! Another person who actually uses this! I wonder how many people use the abbreviation without knowing what it stands for or means, only how to use it. "Quid erat demonstrandum": what was to be shown? Sounds about right, but it also sounds like the speaker had a sketchy Latin grammar and a dictionary to make it. Perhaps not. I don't know Latin; I just have good reference materials. In Hansu, that works out to "Ras lo ndalkik" (with a vocalic n), or "Thus I have shown [it]".