The discrepancies I noted are as follows (I don't claim that they are very significant, though)
a) The example 13.4 Canzonetta uses
%%MIDI program 1 75 The {program} keyword is not defined anywhere in the draft text, although the meaning of the statement is clear.
It should possibly have been coded %%MIDI Voice 1 Instrument=75 although voices are not necessarily synonymous with MIDI channels
b) The same example uses %%STAVES [1|2|3]
This directive (staves) is not defined in the document
c) In the Voice command, the examples (Zochartiu Loch) use abbreviation sname= which is not defined. I assumed it meant subname, but the abbreviation for that is snm=