Topic:
Provides information that links the current document to other documents or URL resources. The LINK element is typically used to indicate authorship, related indexes/glossaries, other document versions, document tree hierarchy, and associated resources.
HREF= "URL"
the address of the current link destination, accessible through normal Web linkage mechanisms. Works the same as the anchor tag <A> ... </A>.
URN="permanent name"
A Uniform Resource Name provides a permanent address for a web-based resource; unlike a URL, which can move or disappear over time, a URN is meant to be a permanent fixture on the Web landscape. This may be a text field with an FTP address, or provide contact information requiring human (not browser) action to follow.
NAME="text"
the name of this anchor, for reference access from other locations or documents.
REL=("next"|"previous"|"parent"|"made")
The REL attribute specifies the relationship between the current anchor and the destination.
"Next" indicates that the URL points to the next page in a sequence, "previous" that it points to the prior page, while "parent" indicates that the current page is the parent of the destination page. "Made" indicates that the destination page contains information about the current anchor page's maker or owner.
REV=("next"|"previous"|"parent"|"made")
REV is the reverse of the REL attribute, and indicates the destination and the current anchor. All of the attribute values are the same, but apply to the page that the URL points to. Here, "made" indicates that this document contains information about the maker or owner of the destination page.
TITLE="text"
provides advisory information about the title of the destination document (usually, the same text as enclosed by the <TITLE> ... </TITLE> tags in that document).
METHODS="method1,method2,method3, ... "
provides a comma-separated list of HTTP methods for accessing the object or objects on the other side of the link (e.g. http, ftp, gopher, WAIS, news, etc.). This helps to instruct the browser as to the best methods to access the information from the destination (that is, like the TITLE attribute, METHODS supplies advisory information to guide the browser's action).
<LINK> is legal only within the <HEAD> ... </HEAD> tags.
As a singleton tag, <LINK> permits no enclosed markup.
Typical uses include authorship attributions, access to glossaries or tutorials, and information about prior (outdated) or newer (more current) versions of the document in which the <LINK> occurs.