It is like Duchamp's Fountain in a way. Challenges the perception and pushes what is possible. The trick can be properly documented in a page of text and wrap

It is like Duchamp's Fountain in a way. Challenges the perception and pushes what is possible. The trick can be properly documented in a page of text and wrapped in a macro... (D'oh!) It is probably non-conforming anyway or depends on a choice made by the implementation.