Did you look at the PDF file you sent me?

I'm not certain how much is lost from that file because I'm missing a font that Adobe needs to render the file. I'm assuming not much content was lost.

I see many commands documented for zones 2 and 4, with only a few for zone 1 and only two commands documented for zone 3.

My question was why is the documented set different by zone.

You seem to be saying that the set of commands it understands for zone3 should be just as big as the set for zone 2 or 4.