To give a little more information, the writing was seen in a university on the wall of a gents' loo (that's bathroom in English slang to any Americans).
The marks *look* kind of like a sigil to me, but on the other hand they might be scientific symbols. I honestly have no idea. I'd rather like to get the mystery solved though!
If you have any suggestions, then do leave a comment. And if you have any other questions you'd like to ask me or other readers of A Bad Witch's Blog, leave a comment about that too or email me at firstname.lastname@example.org