I also strongly suggest that the MPD extension become part of the spec. Basically we should just fold it into the existing File Format doc.
While we're at it we should also change the name of the "Colour Definition Language Extension" to "Colour Definition Specification" since it's already part of the spec.
While we're at it we should also change the name of the "Colour Definition Language Extension" to "Colour Definition Specification" since it's already part of the spec.