I'm playing on  a Windows 7 laptop with Firefox browser. Go E, E, S from the start and you find yourself in 'The ? in the Air', where the question mark is a tiny box that I presume to be a Unicode character that doesn't have a glyph in the game's font. The tiny numbers in the box appear to be 01D 11E. Can you tell me what that character is supposed to be?

If you then go E, you find yourself 'In the ?', where the question mark is the same as above. That room's title is followed by three unknown characters that appear to be 01D 15F, 01D 12B and 01D 195. I don't know if these are important, but can you also tell me what these are supposed to be?

There may be other unknown characters that I haven't come across yet.