this is driving me nuts...

I'm looking for a web site and somehow I misplaced the bookmark, and I can't seem to find the right google search words. It was a site where you could look up the meaning of symbols and pictograms. The symbols were sorted according to their symmetry and based on whether they contain "closed" or "open" lines (I'm not sure if that was the terminology, but basically something like a circle is the "closed" kind, something like a cross "open") or both, so that you could narrow down the symbols that were a possible match for the one you're looking for fairly quickly. IIRC you could also search by meaning and then it would show symbols. Does anyone know the URL for this site?

ETA: I was looking for symbols.com.