For the love of order
While the code in the books is complicated, they party eventually works out how to read them.
Several of the sections are information about a wide variety of people. Much of it appears to be focused at being able to gain leverage over them, either by understanding what approach would work for persuading them or for black mail. Due to the type of code, no names are recoverable. So you know that Akd8x is having an affair and Ixkrfj3 is addicted to some drug, but not who those people are.
Another part of it describes the structure of an organization, and includes references to the “inner layer” and the “outer layer”. What this means is unclear. Part of it is a textual description of an org chart, and some is descriptions of individuals. There is talk of who should be considered for “promotion”. This is sometimes followed by a comment that they were promoted.