### 2.0 Copyright
-Distributed revision control with Mercurial
-Bryan O’Sullivan
+This document is a modified version originally known as "Distributed
+revision control with Mercurial" and originally authored by Bryan
+O’Sullivan. The original document was obtained from
+<http://hgbook.red-bean.com/>.
Copyright © 2006, 2007 Bryan O’Sullivan.
conditions set forth in version 1.0 of the Open Publication
License. Please refer to Appendix D for the license text.
+As this is a modified version, the name of Bryan O'Sullivan is used
+only to properly credit him with the original text. The appearance of
+his name here explicitly does not assert or imply his endorsement of
+this modified document.
+
+Portions Copyright © 2007 Carl Worth.
+
+Changes made by Carl include the following:
+
+ * 2007-09-27:
+ * Convert from HTML to markdown source syntax
+ * Eliminate all content except Chapter 2 and Appendix D
+ * Eliminate line numbers from examples
+
### 2.1 Installing Mercurial on your system
Prebuilt binary packages of Mercurial are available for every popular