definition of terms
the author - Ladislav Petruš
the site - http://petrus.sk and any subdomains
the source - web site http://www.petrus.sk
the license - Creative Commons Attribution Non-commercial No Derivatives License
Any material available from the site is (c) copyright 2002, 2008 Ladislav Petruš, some rights reserved. You are entitled to use the material under the conditions set by the Creative Commons Attribution Non-commercial No Derivatives License. When using the material, you must clearly and visibly attribute the author, the source, and the license.