Scale définition, it contains general information of the kind of organ and the definition of all the tracks definition of the scale speed of the reading for the organ in (mm/s) Book width in mm distance of the first track axis from the edge of the book distance between tracks default height of the holes definition of each tracks in the book collection of the track definition this is an "abstract" definition of the track, each track has a number (starting with 0) this is a track note definition this is the note defined in this term : it use the ABCDEFG notation, followed by the octave number for example A3, B3 ... if an accident has to be specified, only the # is supported, the accident is specified between the note and the octave for exemple A#3 C#3 ... this track definition define a "command" track, for example : drums, registers controls ... this is the delay of the control (in mm) if the track control has a fixed size, this is the fixed length in mm Virtual Organ Book Definition, it include instrument capability (scale), and the "punches" Collection of holes Scale definition Collection of the holes of the book Name of the book PipeStop definition normalized pipestop name a boolean indicated that the pipestop is controlled by a register a set of pipe stops, generally SING / ACCOMPAGNEMENT / BASS ..