The Church of England's official book of liturgy as established in English Law is the "Book of Common Prayer" (BCP). In addition to this book the General Synod has also legislated for a modern liturgical book, "Common Worship", dating from 2000, which can be used as an alternative to the BCP. Like its predecessor, the 1980 "Alternative Service Book", it differs from the "Book of Common Prayer" in providing a range of alternative services, mostly in modern language, although it does include some BCP-based forms as well, for example Order Two for Holy Communion. (This is a revision of the BCP service, altering some words and allowing the insertion of some other liturgical texts such as the "Agnus Dei" before communion.) The Order One rite follows the pattern of more modern liturgical scholarship.