The Content-Version entity-header field defines the version tag associated with a rendition of an evolving entity. Together with the Derived-From field, it allows a group of people to work simultaneously on the creation of a work as an iterative process. The field should be used to allow evolution of a particular work along a single path rather than derived works or renditions in different representations. (RFC 2068: Hypertext Transfer Protocol - HTTP/1.1)


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