This book is divided into 3 parts.
The first part describes the MuPDF C API, the concepts behind it, and how to call it. If you wish to build an application from MuPDF, the information you need should be here.
The second part describes some of the modules used to build MuPDF. If you wish to extend MuPDF, perhaps to open new formats, or to offer new operations on documents once open, this is the part to refer to.
The third part describes some details of the actual language interpreters. This will primarily be of interest to people wanting to do low level operations on document formats (in particular PDF), but might be of interest to authors of new document format handlers to see how common problems have been addressed.
The fourth part describes some of the tools, libraries, and ‘helper’ routines provided with MuPDF. These helper routines are not strictly part of the MuPDF library, but can nonetheless be very useful when implementing applications based on it.
Finally, we have a part dedicated to platform specifics and the different language bindings available.