Indicates that the current document represents the person who owns the linked content. Indicates that the main content of the current document is covered by the copyright license. The referenced document is not part of the same site as the current document.Īn icon representing the current document. Tells the browser to preemptively perform DNS resolution for the target resource's origin. rel valueĪlternate representations of the current document.Īuthor of the current document or article. Every keyword within a space-separated value should be unique within that value. The following table lists some of the most important existing keywords. If a rel attribute not present in one of the three sources above is used some HTML validators (such as the W3C Markup Validation Service) will generate a warning. The current registries for the possible values of the rel attribute are the IANA link relation registry, the HTML Living Standard, and the freely-editable existing-rel-values page in the microformats wiki, as suggested by the Living Standard. Differently from a class name, which does not express semantics, the rel attribute must express tokens that are semantically valid for both machines and humans. The type of relationships is given by the value of the rel attribute, which, if present, must have a value that is an unordered set of unique space-separated keywords. Valid on, ,, and, the supported values depend on the element on which the attribute is found. The rel attribute defines the relationship between a linked resource and the current document. Allowing cross-origin use of images and canvas.HTML table advanced features and accessibility.From object to iframe - other embedding technologies. Assessment: Structuring a page of content.
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