This international standard specifies the WARC file format:- to store both the payload content and control information from mainstream Internet application layerprotocols, such as HTTP, DNS, and FTP;- to store arbitrary metadata linked to other stored data (e.g., subject classifier, discovered language,encoding);- to support data compression and maintain data record integrity;- to store all control information from the harvesting protocol (e.g., request headers), not just responseinformation;- to store the results of data transformations linked to other stored data;- to store a duplicate detection event linked to other stored data (to reduce storage in the