Is the VSIG 2 manual broadly applicable to VSIG 3. I’m wrapping my head around things slowly. I have a few algorithms planned, similar to some things I’ve built on the KSP8, and a few that I couldn’t quite implement.
Vsig2 is the parent of Vsig3, so they're related, but aside from those two pages I pointed out, I wouldn't recommend reading more except for historical context.
The best way to learn Vsig3 is to download algorithms from the H9000 and pick them apart.