Copac is a traditional library catalogue - which means it gives access to details of documents and their location. The records on Copac represent the merged online catalogues of members of the Research Libraries UK (RLUK). There are some 30 million records on Copac representing the merged holdings of RLUK member institutions, including the British Library, the National Library of Scotland, the National Library of Wales/Llyfrgell Genedlaethol Cymru, and the National Art Library (V&A), plus special collections from a small number of non-RLUK libraries. The remaining RLUK libraries' catalogues are also being loaded with data from more non-RLUK institutions to be added too.