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@@ -678,7 +678,11 @@ |
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<li><a href="#linkTypes"><span class=secno>4.5.3. </span>Link |
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types</a> |
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<li><a href="#image"><span class=secno>4.5.4. </span>Image maps</a> |
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<li><a href="#link-type"><span class=secno>4.5.4. </span>Link type |
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"<dfn id=alternate |
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title=rel-alternate><code>alternate</code></dfn>"</a> |
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<li><a href="#image"><span class=secno>4.5.5. </span>Image maps</a> |
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</ul> |
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<li><a href="#tabular0"><span class=secno>4.6. </span>Tabular data</a> |
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<h4 id=linkTypes><span class=secno>4.5.3. </span>Link types</h4> |
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<p class=big-issue>This section might at some future point list a small set |
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of link <code>rel</code>ationship types and more exactly define their |
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semantics than HTML4. This section (or indeed this specification in |
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general) is unlikely to specify anything related to the <code |
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title=attr-head-profile><a href="#profile">profile</a></code> attribute |
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and how to extend the link types in HTML. Work in this area is currently |
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being done by <a href="http://gmpg.org/">GMPG</a> and <a |
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href="http://protogenius.com/rel-schemas/draft-scheid-rel-schemas-00.htm">others</a>.</p> |
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<!-- |
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this section defines whether a particular link type is an external resource or a hyperlink |
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<p>The following table summarises the link types that are defined by this |
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specification. This table is non-normative; the actual definitions for the |
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link types are given in the next few sections. |
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issues for rel="", etc: |
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rel="alternate" with hreflang="" |
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rel="alternate" with type="" |
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rel="alternate" with media="" |
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rel="alternate stylesheet" |
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rel="up" vs rel="up up" vs rel="up up up top" |
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rel="feed" vs rel="alternate" type="application/rss+xml" |
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rel="icon" |
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rel="script" |
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rel="related" // see also |
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rel="prefetch" |
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rel="help" (Charles McCathieNevile): alternative to help="". give algo for nearest con.-sen. help |
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`-> "Nearness" seems in general like a really bad way to guess where the |
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> help is. Do you mean closest in the markup, or in the laid-out |
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> rendering? If the link were required to be inside a label in order to be |
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> associated with a form control, that might make sense though. |
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rev="" |
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rel="nofollow" - http://www.google.com/googleblog/2005/01/preventing-comment-spam.html |
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Refers to a resource that may be related to the linking |
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document, but is not endorsed by the author. This should |
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not be counted as a negative rating for the resource, |
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however. - http://www.w3.org/mid/41F0E7FA.4060301@iinet.net.au |
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- http://radio.weblogs.com/0001011/2005/01/31.html#a9301 (scoble on why it isn't bad) |
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which relationship combinations are allowed |
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what multiple values might mean (multiple rel="top") |
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removal of redundancy |
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http://www.euronet.nl/~tekelenb/WWW/LINK/ |
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http://shift.freezope.org/konq_rellinks/development_html |
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http://hixie.ch/specs/html/link/001 |
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http://hixie.ch/specs/html/link/002 |
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http://www.hixie.ch/specs/html/metadata |
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<nav> |
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<p> |
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<a href="/" rel="top up up up">Main</a> > |
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<a href="/products/" rel="up up">Products</a> > |
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<a href="/products/dishwashers" rel="up">Dishwashers</a> > |
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Second hand |
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</p> |
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</nav> |
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mpt says: |
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> "As with <a> elements, when <link> elements that use these relationships |
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> are present, UAs should render them. As with <a> elements, when <link> |
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> elements that use these relationships do not exist, UAs should not |
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> render them. UAs should not make <link> rendering any easier to hide |
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> than <a> rendering." |
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rel="bookmark" gives permalink of nearest sectioning element |
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<dd>The first <code>a</code> element with a <code>rel</code> |
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attribute having as one of its values the keyword |
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<code>bookmark</code> in a depth first search of the |
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<code>article</code> element is the article's permalink. |
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disallow: http://microformats.org/wiki/rel-enclosure |
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--> |
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<p>In this section, the term <em>referenced document</em> refers to the |
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resource identified by the element representing the link, and the term |
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<em>current document</em> refers to the resource within which the element |
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representing the link finds itself. |
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<table> |
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<thead> |
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<tbody> |
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<tr> |
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<td><code title=rel-alternate>alternate</code></td> |
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<td><code title=rel-alternate><a href="#alternate0">alternate</a></code></td> |
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<!-- second most used <link rel> value --> |
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<td><a href="#hyperlink0" title="hyperlink link">Hyperlink</a> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Gives alternate representations of the document. |
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<td>Gives alternate representations of the current document. |
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<tr> |
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<td><code title=rel-archives>archives</code> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Gives a link to the document's author. |
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<td>Gives a link to the current document's author. |
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<tr> |
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<td><code title=rel-bookmark>bookmark</code></td> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Gives a link to contact information for the document. |
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<td>Gives a link to contact information for the current document. |
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<tr> |
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<td><code title=rel-external>external</code></td> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Indicates that the target resource is not part of the site that the |
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document is part of. |
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<td>Indicates that the target document is not part of the same site as |
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the current document. |
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<tr> |
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<td><code title=rel-feed>feed</code> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Gives the address of a syndication feed for the document. |
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<td>Gives the address of a syndication feed for the current document. |
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<tr> |
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<td><code title=rel-first>first</code> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Indicates that the document is a part of a series, and that the |
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first document in the series is the target document. |
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<td>Indicates that the current document is a part of a series, and that |
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the first document in the series is the target document. |
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<tr> |
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<td><code title=rel-help>help</code> |
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<td><em>not allowed</em> |
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<td>Imports an icon to represent the document. |
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<td>Imports an icon to represent the current document. |
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<tr> |
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<td><code title=rel-index>index</code></td> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Indicates that the document is a part of a series, and that the last |
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document in the series is the target document. |
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<td>Indicates that the current document is a part of a series, and that |
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the last document in the series is the target document. |
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<tr> |
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<td><code title=rel-license>license</code></td> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Indicates that the document is covered by the copyright license |
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described by the target document. |
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<td>Indicates that the current document is covered by the copyright |
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license described by the target document. |
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<tr> |
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<td><code title=rel-next>next</code> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Indicates that the document is a part of a series, and that the next |
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document in the series is the target document. |
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<td>Indicates that the current document is a part of a series, and that |
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the next document in the series is the target document. |
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<tr> |
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<td><code title=rel-nofollow>nofollow</code></td> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Indicates that the document's original author or publisher does not |
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endorse the target document. |
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<td>Indicates that the current document's original author or publisher |
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does not endorse the target document. |
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<tr> |
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<td><code title=rel-pingback>pingback</code> |
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<td><em>not allowed</em> |
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<td>Gives the address of the pingback server that handles pingbacks to |
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this document. |
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the current document. |
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<tr> |
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<td><code title=rel-prefetch>prefetch</code> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Indicates that the document is a part of a series, and that the |
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previous document in the series is the target document. |
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<td>Indicates that the current document is a part of a series, and that |
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the previous document in the series is the target document. |
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<tr> |
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<td><code title=rel-search>search</code></td> |
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<td><a href="#hyperlinks">Hyperlink</a> |
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<td>Gives a tag (identified by the given address) that applies to this |
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document. |
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<td>Gives a tag (identified by the given address) that applies to the |
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current document. |
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<tr> |
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<td><code title=rel-up>up</code> |
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document. |
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</table> |
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<h4 id=image><span class=secno>4.5.4. </span>Image maps</h4> |
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<h4 id=link-type><span class=secno>4.5.4. </span>Link type "<dfn |
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id=alternate0 title=rel-alternate><code>alternate</code></dfn>"</h4> |
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<p>On the <code><a href="#link0">link</a></code> element, if the the <code |
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title=attr-link-rel><a href="#rel">rel</a></code> attribute also contains |
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the keyword <code title=rel-stylesheet>stylesheet</code>, the <code |
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title=rel-alternate><a href="#alternate0">alternate</a></code> keyword |
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modifies the meaning of the <code title=rel-stylesheet>stylesheet</code> |
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keyword in the way described for that keyword, and the rest of this |
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subsection doesn't apply. |
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<p>Otherwise, the <code title=rel-alternate><a |
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href="#alternate0">alternate</a></code> keyword indicates that the |
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referenced document is an alternate representation of the current |
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document. |
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<p>The nature of the target document is given by the <code |
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title=attr-hyperlink-media><a href="#media5">media</a></code>, <code |
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title=attr-hyperlink-hreflang><a href="#hreflang3">hreflang</a></code>, |
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and <code title=attr-hyperlink-type><a href="#type14">type</a></code> |
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attributes. |
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<p>If the <code title=rel-alternate><a |
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href="#alternate0">alternate</a></code> keyword is used with the <code |
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title=attr-hyperlink-media><a href="#media5">media</a></code> attribute, |
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it indicates that the target document is intended for use with the media |
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specified. |
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<p>If the <code title=rel-alternate><a |
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href="#alternate0">alternate</a></code> keyword is used with the <code |
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title=attr-hyperlink-hreflang><a href="#hreflang3">hreflang</a></code> |
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attribute, it indicates that the target document is a translation. |
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<p>If the <code title=rel-alternate><a |
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href="#alternate0">alternate</a></code> keyword is used with the <code |
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title=attr-hyperlink-type><a href="#type14">type</a></code> attribute, it |
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indicates that the target document is a reformulation of the current |
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document in the specified format. |
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<p>If the <code title=rel-alternate><a |
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href="#alternate0">alternate</a></code> keyword is used with the <code |
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title=attr-hyperlink-type><a href="#type14">type</a></code> attribute set |
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to the value <code title="">application/rss+xml</code> or the value <code |
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title="">application/atom+xml</code>, then the user agent must treat the |
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link as it would if it had the <code title=rel-feed>feed</code> keyword |
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specified as well.</p> |
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<!-- |
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this section defines whether a particular link type is an external resource or a hyperlink |
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issues for rel="", etc: |
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rel="alternate stylesheet" |
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rel="up" vs rel="up up" vs rel="up up up top" |
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rel="feed" vs rel="alternate" type="application/rss+xml" |
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rel="icon" |
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rel="script" |
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rel="related" // see also |
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rel="prefetch" |
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rel="help" (Charles McCathieNevile): alternative to help="". give algo for nearest con.-sen. help |
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`-> "Nearness" seems in general like a really bad way to guess where the |
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> help is. Do you mean closest in the markup, or in the laid-out |
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> rendering? If the link were required to be inside a label in order to be |
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> associated with a form control, that might make sense though. |
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rev="" |
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rel="nofollow" - http://www.google.com/googleblog/2005/01/preventing-comment-spam.html |
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Refers to a resource that may be related to the linking |
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document, but is not endorsed by the author. This should |
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not be counted as a negative rating for the resource, |
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however. - http://www.w3.org/mid/41F0E7FA.4060301@iinet.net.au |
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- http://radio.weblogs.com/0001011/2005/01/31.html#a9301 (scoble on why it isn't bad) |
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which relationship combinations are allowed |
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what multiple values might mean (multiple rel="top") |
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removal of redundancy |
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http://www.euronet.nl/~tekelenb/WWW/LINK/ |
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http://shift.freezope.org/konq_rellinks/development_html |
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http://hixie.ch/specs/html/link/001 |
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http://hixie.ch/specs/html/link/002 |
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http://www.hixie.ch/specs/html/metadata |
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<nav> |
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<p> |
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<a href="/" rel="top up up up">Main</a> > |
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<a href="/products/" rel="up up">Products</a> > |
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<a href="/products/dishwashers" rel="up">Dishwashers</a> > |
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Second hand |
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</p> |
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</nav> |
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|
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|
mpt says: |
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> "As with <a> elements, when <link> elements that use these relationships |
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> are present, UAs should render them. As with <a> elements, when <link> |
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> elements that use these relationships do not exist, UAs should not |
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|
> render them. UAs should not make <link> rendering any easier to hide |
|
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> than <a> rendering." |
|
|
|
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rel="bookmark" gives permalink of nearest sectioning element |
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<dd>The first <code>a</code> element with a <code>rel</code> |
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attribute having as one of its values the keyword |
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<code>bookmark</code> in a depth first search of the |
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<code>article</code> element is the article's permalink. |
|
|
|
|
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disallow: http://microformats.org/wiki/rel-enclosure |
|
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|
|
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--> |
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<h4 id=image><span class=secno>4.5.5. </span>Image maps</h4> |
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<p class=big-issue>...<dfn id=image0>image map</dfn>, <dfn id=valid5>valid |
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area</dfn>, <dfn id=usemap1 |
