Liber Regalis (the Westminster coronation order)

The Liber Regalis, the medieval order of service preserved at Westminster Abbey, is the primary liturgical text underlying English coronation ceremonies, its core structure still recognizable in the coronation rite used for English and later British monarchs into the modern era. Its strength is that it is the actual primary manuscript source for the ceremony's structure, prayers and symbolic acts, the correct reference for what the historical rite specifies rather than a modern description of it. Its limit is that the surviving text represents a particular medieval recension, and the ceremony as performed has been adapted, abridged and reinterpreted at various points across the centuries since, so a claim about how a specific historical coronation was actually conducted needs the record of that particular ceremony rather than the Liber Regalis's base text assumed unchanged.