In February 2001, Addison Wesley Longman, the publishers and copyright holders of the book, graciously agreed to release the book under an Open Publication license. See the file COPYING for details. I have converted the book from it's original LaTeX into XML, and then into HTML. The XML and HTML files live in their own subdirectories below this one. The HTML files are self-contained: you can point a browser at a local copy and read away. This release contains some known formatting problems, but I wanted to get in out in front of folks for comment. 1. Diagrams have not been converted. 2. Some code fragments appear in body font, not code font. 3. Some lists have strange formatting under Mozilla 0.8. This formatting is OK under Netscape and IE, so I'm open to suggestions on what is happening Regards Dave Thomas The Pragmatic Programmers rubybook@pragmaticprogrammer.com