============ CWR Glossary ============ .. glossary:: Group A collection with all the transactions of a type in the transmission. Control Records Records used to ensure the data has not been damaged or tampered. These are the Transmission and Group Header and Trailer. File In the CWR context, a file is one following the CWR standard, meaning it has the correct naming scheme and contents. Transaction A collection of new information for things such as work registrations or agreeements. Transaction Header Initial record on a Transaction, which indicates the type of this transaction. Transmission All the collected records in the file. It can be considered as the logical representation of all this data.