Copyright Notice

The pages on our site are free but they are copyrighted. You have permission to download copies of any page and to reproduce them for non-commercial, educational purposes, provided:

  • You use it without alteration, other than sectioning it into smaller pieces. Also you must always include the author's name at the beginning of the file if it is a paper or outline.
  • If you print a file, the author's name should appear on each page.
  • If you download a file in HTML format and use it on a web site, you must include a link to the Xenos web site at

We hope you enjoy your visit to the site and that you find our material useful. Don't hesitate to ask questions.