pointer

Hypertext links in HTML (draft)

      POINTER
         The pointer relationship identifies a hypertext pointer. That
         is, this is a way to do indirection in HTML.

         When REV=POINTER, the anchor is a pointer to the target
         document. When a hypertext link is traversed to a LINK or A
         element with REV=POINTER, the target specified by the HREF
         value should be traversed, and so on, until a target without
         REV=POINTER is retrieved.
             <LINK NAME=PSEUDO REV=POINTER HREF="real.html">

         When REL=POINTER, the target is a pointer to the real target.
         This value can be used by a user agent to perform a pre-fetch
         of the specified target for evaluation until the real target is
         reached.

         NOTE: The authors propose that the NAME attribute be removed
         from the LINK element, or that a practical use for it should be
         defined. For example, hypertext indirection can be specified by
         providing both a NAME and an HREF value on the LINK element, in
         combination with a specific REL or REV value, such as POINTER.
         Some support exists among members of the HTML Working Group to
         provide for hypertext indirection with the LINK element.  There
         is no other reason for an author to define a target by using
         the NAME attribute on a LINK element, since the resulting
         target address is functionally equivalent to the address of the
         document in which such a target is defined.

[引用： 4.4f. Other REL and REV Values Under Discussion -- Hypertext links in HTML (draft) より]