The copying of materials published on our web sites is only allowed in accordance with the following permissions:

• You may view this web page on screen and print out a copy for personal use.
  
• You may save a copy of this page to your local hard disk for the purposes of creating one personal back up copy.

All other copying and distribution of any of the contents of this site are strictly forbidden.

This licence to copy does not permit incorporation of the material or any part of it in any other work or publication, whether in hard copy or electronic or any other form. In particular, (but without limitation) no part of the XILO web page(s) may be distributed or copied for any commercial purpose. No part of the XILO web page(s) may be reproduced on or transmitted to or stored in any other web site or other form of electronic retrieval system nor may be accessed in such manner as to make them appear part of any third party's web site or electronic database or retrieval system, without the express written permission of XILO.