Not... totally sure what you mean, but I can try to explain as best as I can. The most obvious, I feel, is Universe (or Situation; the top-left Domain). What are all the different states of the Universe? The unchanging Past; the immediate Present; the distant Future; and the fluctuation of Progression. Understand all four of them, and you understand the totality of the Universe. The same goes for Mind: you have unchanging Memories; your immediate Contemplations; your distant Desires; and your fluctuating Responses. If you know all four of those, you know everything about that person's Mind.
All of Dramatica's terms map into the 2x2 square. The fundamental version of it is Knowledge, Thought, Desire, and Ability. And those four map onto... I'm sorry, I don't quite remember, but I think it's Matter, Time, Motion, and Energy, or something to that effect. It's that totality that I think is so amazing about Dramatica. Dramatica is a Theory of Everything.
As to where you can read this, if it's not in the main theory book, it'd be in the original, apocryphal version of the theory, which I believe is on Melanie's website.