Originally Posted by JensW
Would be a lot nicer if I could read the DIRM chuck, but I can't really find the information where it is supposed to be in the file. I don't know why but..whatever, main thing is that it works.
I think you can find the info here:
First link under the White Papers & Tech Docs
section, is the djvu 3 specification. Section 8.3.2 describes the DIRM directory chunk