1. Artistic representation via a spray-paint medium. Often portraying nearly un-readable text, cryptic messages, and strange character representations, it is a product of the youth of the modern era. It is often placed on private property (which is, indeed, illegal). It is one of the last forms of free artistic expression understood by many urban youth.
2. Handwriting recognition software for the Newton and Zoomer which recognises symbols that aren't necessarily letters.