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relLicense is a simple, open, format for indicating content licenses which is embedable in (X)HTML, Atom, RSS, and arbitrary XML. relLicense is | relLicense is a simple, open, format for indicating content licenses which is embedable in (X)HTML, Atom, RSS, and arbitrary XML. relLicense is one of several [[microformats|microformat]] open standards. | ||
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Revision as of 00:15, 23 June 2005
rel="license"
relLicense is a simple, open, format for indicating content licenses which is embedable in (X)HTML, Atom, RSS, and arbitrary XML. relLicense is one of several microformat open standards.
Draft Specification 2005-02-06
Author
Tantek Çelik, Technorati, Inc.
Copyright
This specification is (C) 2004-2024 by the authors. However, the authors intend to submit (or already have submitted, see details in the spec) this specification to a standards body with a liberal copyright/licensing policy such as the GMPG, IETF, and/or W3C. Anyone wishing to contribute should read their copyright principles, policies and licenses (e.g. the GMPG Principles) and agree to them, including licensing of all contributions under all required licenses (e.g. CC-by 1.0 and later), before contributing.
Patents
This specification is subject to a royalty free patent policy, e.g. per the W3C Patent Policy, and IETF RFC3667 & RFC3668.
Abstract
RelLicense is one of several MicroFormats. By adding rel="license"
to a hyperlink, a page indicates that the destination of that hyperlink is license for the current page. E.g. with the following hyperlink:
<a href="http://creativecommons.org/licenses/by/2.0/" rel="license">cc by 2.0</a>
the author indicates that the page is licensed under a Creative Commons 2.0 Attribution Required license.
Multiple Licenses
Multiple such rel="license" hyperlinks indicate that the page is available under any of the referred licenses. E.g. the following hyperlinks could be used to declare that a page is available under either a Creative Commons 2.0 Attribution Required license or the Apache 2.0 license:
<a href="http://creativecommons.org/licenses/by/2.0/" rel="license">cc by 2.0</a> <a href="http://www.apache.org/licenses/LICENSE-2.0" rel="license">Apache 2.0</a>
XMDP profile
<dl class="profile"> <dt id="rel">rel</dt> <dd><p> <a rel="help" href="http://www.w3.org/TR/html401/struct/links.html#adef-rel"> HTML4 definition of the 'rel' attribute.</a> Here is an additional value.</p> <dl> <dt id="license">license</dt> <dd>Indicates that the referred resource is a license for the referring page.</dd> </dl> </dd> </dl>
normative references
informative references
- 20040211 rel="license" first proposed in presentation real world semantics at 2004 O'Reilly Emerging Technologies Conference, San Diego, CA, USA.
- 20040225 Thorough discussion of rel="license" including advantages and presentation possibilities.
- Creative Commons 2.0 By (Attribution Required) license
- Apache 2.0 license
- Contributed from http://developers.technorati.com/wiki/RelLicense
see also
- See rellicense-issues for issues which have been raised with this microformat.