<hypertext> (Or "span", "region", "button", "extent") An area within the content of a hypertext node (e.g. a web page) which is the source or destination of a link. A source anchor may be a word, phrase, image, or possibly the whole node. A destination anchor may be a whole node or some position within the node.
Typically, clicking with the mouse on a source anchor causes the link to be followed and the anchor at the opposite end of the link to be displayed. Anchors are highlighted in some way (either always, or when the mouse is over them), or they may be marked by a special symbol.
In HTML anchors are created with the <A..>..</A> construct. The opening A tag of a source anchor has an HREF (hypertext reference) attribute giving the destination in the form of a URL - usually a whole node or "page". E.g.
Free On-line Dictionary of Computing</A>
Destination anchors are only used in HTML to name a position within a page using a NAME attribute. E.g.
The name or "fragment identifier" is appended to the URL of the page with a "#":
(Though it is generally better to break pages into smaller units than to have large pages with named sections).