It includes information on data encoding and compression, as well as how to gracefully interrupt a file transfer. There are several programming examples written in C that perform some of the functions. These are followed by a discussion and analysis of the Kermit protocol, implementation tricks, and a comparison of Kermit to other file transfer protocols. In summary, the book provides a complete reference guide to Kermit and its current implementation. It is well written in a lighthearted and non-condescending manner.
Most diagrams are hand-scribed, giving it a notebook style.
Even if you don't use Kermit, if you're at all interested in what goes on in the elusive process of one computer 'talking' to another, I highly recommend this book. By the way, in case you're wondering if there is any relationship between Kermit and the popular frog, you'll have to read the book.