This is a new book which is a series of concepts and "what can we do with $SUBJECT" information.

This would allow us to add all concepts here an easily accessible source for what things are and what to do with them. I envision this as being something like this:

Chapter: SUBJECT
 Section: What SUBJECT is.
 Section: What can we do with SUBJECT in JDG?
 Section: How SUBJECT works.

The third one can even be done away with, as these are in order of priority so something like what Passivation is, then all the things it can be used for in JDG and links to related admin guide or getting started or developer guide content that outlines exactly how to do these things, and lastly information about technically how it works.