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A hyperlink, additionally known as simply “a link”, could be a reference in a hypertext document to a different document or other resource. It is an integral part of the hypertext transfer protocol (http) for World Wide Internet, but it is used also in offline documents, such as .pdf (moveable document file, Adobe Acrobat native format) and in .XML (extended markup language). Hyperlink can be used to fetch content and save it, read it as a separate document or show as a part of the reference document.

The history of the hyperlink

The history of the hyperlink began in 1965. Theodore Nelson in “the Xanadu Project” transposed the thought from fictional microfilm cross-referencing system into the computer world. In an exceedingly series of books and articles printed from 1964 through 1980 the overall concept was modified from linking whole microfilm pages to connecting specific lines of computer text. Primary concept was meant to use on single computer machine, but introduction of DARPA network boosted the idea into making links between documents and files stored on many networked machines. The concept of connecting elements of one document via hyperlink arose independently, however was quickly merged to the hyperlink system. Both ideas combined together were fundamental for creating World Wide Web.

How does a hyperlink work?

A hyperlink has 2 ends, known as anchors, and a direction. The link starts at the supply anchor and points to the destination anchor. But, the name hyperlink is often used for the supply anchor, while the destination anchor is named the hyperlink target. Every browser shows text hyperlinks somewhat exposed (they sometimes mark it with a different color). Clicking on the hyperlink activates it and displays target document.

Hyperlink – measuring the Net

But hyperlinks are not solely the way we surf the Net. Life on the Net without search engines is nearly not possible nowadays, as a result of of unbelievable amount of networked information. Most search engines use so-referred to as “page ranking” to live which website may contain useful information. This mechanism is mostly primarily based on hyperlink popularity. Although whole plan of “page rank” mechanism is more sophisticated, its general concept is predicated on a easy rule: the additional pages have a hyperlink pointing to the ranked page, the upper rank that page gets. Of course, each hyperlink has different price, based on the recognition of the “source” web site (This implies simply that if your web site could be a target for hyperlink placed on the big website like CNet of Microsoft, it’s a lot of higher page rank than a site with many hyperlink connections from private sites). This mechanism is predicated on measuring of hyperlink’s quality. Although not good, each mechanisms typically works well enough to see which web site possesses good content and that hasn’t.

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