Source tracking pertains to the ability of some hypertext systems to rigorously track the exact source of every document or partial document included in the system; that is, they remember who entered the information, when it was entered, when it was updated and by whom, and so on. This allows determining the exact history of every document (and even small parts of documents).
Present HTML and HTTP do not have this feature, but certain systems on the World Wide Web (such as WikiWiki and Everything Engine) may have limited versions of the capability. HTML, an initialism of HyperText Markup Language, is the predominant Markup language for Web pages It provides a means to describe the structure Hypertext Transfer Protocol ( HTTP) is a Communications protocol for the transfer of information on the Internet. The World Wide Web (commonly shortened to the Web) is a system of interlinked Hypertext documents accessed via the Internet. A wiki is a page or collection of Web pages designed to enable anyone who accesses it to contribute or modify content using a simplified Markup language. Everything2, Everything2, or E2 for short is a collaborative Web -based community consisting of a database of interlinked user-submitted written