7 - Section I: ./language.html (Basic Commands).
8 - Section II: ./language2.html (Extended Commands).
13 - ./annhell_api.html (C Language API).
18 - http://en.wikipedia.org/wiki/Key_signature (Key signatures) (tonalities) in Wikipedia.
19 - http://www.midi.org/about-midi/gm/gm1sound.shtml (General MIDI information).
22 Angel Ortega <angel@triptico.com>