> I'm beginning to think that the symbol inside glyph 1 is not a C. To
> convince you, observe the letters in the other glyphs (or the letter C in
> G4): they are "rounded" letters. Thus, if that were a 'C', it
> would have been drawn with round edges. This leaves us with tic-tac-toe
> games, probably...

> Luigi

Probably, but there is no reason to discount any possibility at this point.