Copyright © 2002–2008 C. Michael Pilato, Ben Collins-Sussman, Brian W. Fitzpatrick.
This work is licensed under the Creative Commons Attribution License. To view a copy of this license, visit http://creativecommons.org/licenses/by/2.0/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA. A summary of the license is given below, followed by the full legal text.
You are free:
to copy, distribute, display, and perform the work
to make derivative works
to make commercial use of the work
Under the following conditions:
Attribution. You must give the original author credit.
For any reuse or distribution, you must make clear to others the license terms of this work.
Any of these conditions can be waived if you get permission from the author.
Your fair use and other rights are in no way affected by the above.