SHERPA's new JULIET service breaks down the differing requirements from each of the Research Councils to try and simplify what the policy says has to be done, what authors should archive, when they should archive, and where they should archive their outputs. The list then categorises the different sets of advice in comparison to an ideal Open Access mandate. The JULIET list complements the well-known RoMEO list, which summarises publishers' permissions for archiving research articles.
The A2K (Access to Knowledge) movement takes concerns with copyright law and other regulations that affect knowledge and places them within an understandable social need and policy platform: access to knowledge goods.
The public domain, as we understand it, is the wealth of information that is free from the barriers to access or reuse usually associated with copyright protection, either because it is free from any copyright protection or because the right holders have decided to remove these barriers. It is the raw material from which new knowledge is derived and new cultural works are created.