EIFL supports and encourages the widest possible use of our content. Except where otherwise noted, content on this site is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) Licence. Under the terms of this licence you are permitted to copy, distribute, transmit and adapt the work, as long as you give EIFL credit. Other parts of the site may also include third party content that is licensed on different terms. The different licence terms of that content are either indicated or the content is acknowledged to be ‘Used with permission’.