Here's what I was able to scrounge up...

This first page has a couple posts from the TeX crowd about this and a list of 
relevant works.  This may aid in a follow up

http://www.pvv.ntnu.no/~aslakr/hz.html

This appears to be a short copy of Zapf's original paper on the HZ program:

http://cajun.cs.nott.ac.uk/compsci/epo/papers/volume6/issue3/zapf.pdf

A related paper, much longer, but in French:

http://www.gutenberg.eu.org/pub/GUTenberg/publicationsPDF/27-karow.pdf

Some mentions of TEX of the HZ program:

http://ftp.fi.muni.cz/pub/tex/local/cstug/thanh/hz/description.pdf?N=A

Also, you may want to look for documentation of the KF-program and the JP-program, as 
they appear to be sub-modules of the HZ-program.  Other than this, documentation seems 
scant, and I see some references to patents on the program, suggesting that you're not 
going to find open documentation easily.

-----Original Message-----
From: Victor Mote [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, January 28, 2003 10:44 AM
To: mailing list fop-dev
Subject: source for hz algorithm


Hello all:

I have been looking for some time for a source for the HZ (Hermann Zapf)
algorithm which (as I understand) optimizes line breaks for multiple lines,
looking for rivers, too many lines in a row ending in hyphens, etc. I think
I first saw it referenced in Bringhurst's book, and that it was implemented
by a  European company that is now out of business. I understand that TeX
implemented it or something similar, and that Adobe may have used the TeX
algorithm in InDesign. The closest thing I have found to a source for the
algorithm itself is that Knuth's "Digital Typography" may have it or at
least a discussion of it.

Do any of you have additional information on this, such as how to find the
algorithm itself? Is it patented?

Along these same lines, I recently acquired a book that may be helpful to
others -- James Felici's "The Complete Manual of Typography" (Adobe Press)
has a lot of good information both for users and developers. Chapter 10 on
H&J was especially useful, and somewhat prompted the above questions.

Victor Mote (mailto:[EMAIL PROTECTED])
Enterprise Outfitters (www.outfitr.com)
2025 Eddington Way
Colorado Springs, Colorado 80916
Voice +1 (719) 622-0650, Fax +1 (720) 293-0044


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