In the waking world, the only symbol was the one on the library table--the other had just been broken. Not that that explained why it was there in the first place, or why there were two, here. Xion sighed. While she did sometimes like investigating things, there were too few clues here for comfort. She'd definitely have to ask some of the others later.

"The symbol for Nightmares is the only I can think of, but I'm not sure. I guess we could try just filling it in...Do you want to go back for the chalk?" She did remember seeing some down there.