 These answered by means of "litteras decretals" or "decretals", whose compilation became necessary, as the only way to use and preserve the jurisprudential wealth they contained, since they not only affected ecclesiastical matters, but also those of civilians and seculars.The first compilation was made by Raymond of Peñafort, a Dominican Catalan, and is named "Gregory IX Decretals"; it reunites the decretals appeared between 1154 and 1234 and is divided in five books, this being the reason the following compilation, which includes material up until 1298, was known "Liber sextus" ("Sixth book").In the 14th century new compilations were made, "Clementines", and the "Extravagantes", of John XXII and "Comunas".