Editing XLink (section)

==Support for XLink==

===Within other specifications===

====SVG====
Hypertext links in [[Scalable Vector Graphics]] can currently be defined as simple XLinks.<ref>{{citation |url=http://www.w3.org/TR/SVG11/linking.html#hyperlinking-mod |publisher=W3C |title=Scalable Vector Graphics (SVG) 1.1 Specification: Linking |date=June 8, 2006}}</ref> The [[W3C#Certification|working draft]] of SVG 1.2 proposes using extended XLinks as well.<ref>{{citation |url=http://www.w3.org/TR/2004/WD-SVG12-20041027/extendedlinks.html |publisher=W3C |title=Extended Links (SVG 1.2) |date=June 8, 2006}}</ref> In the SVG 2 specification, XLink was deprecated in favor of non-namespaced equivalent attributes.<ref>{{Cite web|url=https://www.w3.org/TR/SVG2/linking.html#XLinkRefAttrs|title=Linking — SVG 2|website=www.w3.org|access-date=2016-09-18}}</ref>

====RDDL====
The [[RDDL|Resource Directory Description Language]], an extension to [[XHTML Basic]] that is used to describe [[XML Namespaces]], uses simple XLinks.<ref>{{citation |url=http://www.rddl.org/#attributes |title=Resource Directory Description Language (RDDL) |first1=Jonathan |last1=Borden |first2=Tim |last2=Bray |date=2002-02-18 |publisher=The Open Healthcare Group, Antarcti.ca Systems}}</ref>

====XBRL====
The [[XBRL|eXtensible Business Reporting Language]] has used simple and extended XLinks since the XBRL 2.0 specification was published in 2001.<ref>{{citation |url=http://www.xbrl.org/Specification/XBRL-2.1/REC-2003-12-31/XBRL-2.1-REC-2003-12-31+corrected-errata-2013-02-20.html#_3.5 |title=Extensible Business Reporting Language (XBRL) 2.1 - XLink in XBRL |publisher=XBRL International Inc.}}</ref> Most large XBRL taxonomies contain extensive linkbases. As of 2009, XBRL is probably the most extensive use of XLink in production systems.

====METS====
The [[Metadata Encoding and Transmission Standard]], supported and maintained by the [[Library of Congress]] for describing file aggregations, uses simple XLinks in pointing to file locations as well as linkbases which describe relationships among external files (though these restrict <code>to</code> and <code>from</code> attributes to type IDREF instead of NMTOKEN).<ref>{{citation |url=https://www.loc.gov/standards/mets/METSOverview.v2.html |title=METS: An Overview & Tutorial |publisher=Library of Congress}}</ref><ref>{{citation |url=https://www.loc.gov/standards/mets/METS%20Documentation%20final%20070930%20msw.pdf |title=Metadata Encoding and Transmission Standard: Primer and Reference Manual |publisher=Library of Congress |date=September 2007 |pages=133}}</ref>

====GML====
[[Geography Markup Language]] uses simple XLinks to implement referencing. In particular, GML uses xlink:href to support a graph model for geospatial information. GML's graph model is essentially the same as [[Resource Description Framework|RDF]], on which early versions of GML were based. The GML specification constrains the semantics of XLinks to be essentially the same as rdf:resource (from the RDF/XML syntax) i.e. the referent can logically be placed in-line and the data is still valid.

===Implementations===

====Mozilla Firefox====
[[Mozilla Firefox]] has supported simple XLinks since version 1.5, but only for [[Scalable Vector Graphics|SVG]] and [[MathML]] documents. It is unsupported in other XML documents.<ref>{{citation |url=https://developer.mozilla.org/en/XLink |title=XLink - MDC |publisher=Mozilla |access-date=2010-02-19 |archive-date=2012-04-06 |archive-url=https://web.archive.org/web/20120406120631/https://developer.mozilla.org/en/XLink |url-status=dead }}</ref> Only the <code>xlink:href</code>, <code>xlink:show</code>, <code>xlink:target</code> and <code>xlink:title</code> attributes are supported.<ref>{{citation |url=https://developer.mozilla.org/en/SVG_in_Firefox |title=SVG in Firefox |publisher=Mozilla |access-date=2010-02-19 |archive-date=2008-08-29 |archive-url=https://web.archive.org/web/20080829121506/http://developer.mozilla.org/en/SVG_in_Firefox |url-status=dead }}</ref>

====Prince====
[[Prince (software)|Prince]] supports simple XLinks.<ref>{{citation |url=http://www.princexml.com/doc/7.0/xml-input/ |title=Prince: XML Input |publisher=YesLogic}}</ref>