This document is designed to aide the programmer who plans to change MIT's implementation of Kerberos significantly. It is geared towards programmers who are already familiar with Kerberos and how MIT's implementation is structured.
Some of the more basic information needed can be found in the API document, although many functions have been repeated where additional information has been included for the implementer. The function descriptions included are up to date, even if the description of the functions may not be very verbose.