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9. Attribute arcrole

Description

The attribute arcrole describes the meaning of the arc-type element.



Arcrole attribute
The value of the arcrole attribute must be a URI reference. It identifies some resource that describes the intended property.

 <mythology
    xmlns:xlink="http://www.w3.org/1999/xlink"
    xlink:type="extended">
   <hero
      xmlns:xlink="http://www.w3.org/1999/xlink"
      xlink:type="locator"
      xlink:href="http://www.greece.antique/database/heracles.xml"
      xlink:role="http://www.greece.antique/hero"
      xlink:title="Heracles"
      xlink:label="heracles">
   </hero>
   <god
      xmlns:xlink="http://www.w3.org/1999/xlink"
      xlink:type="locator"
      xlink:href="http://www.greece.antique/database/zeus.xml"
      xlink:role="http://www.greece.antique/god"
      xlink:title="Zeus"
      xlink:label="zeus">
   </god>
   <relation
      xmlns:xlink="http://www.w3.org/1999/xlink"
      xlink:type="arc"
      xlink:from="zeus"
      xlink:to="heracles"
      xlink:arcrole="http://www.greece.antique/relations/father">
   </relation>
 </mythology>


Error - illegal value of the arcrole attribute
The value of the arcrole attribute must be a URI reference.
...
<relation
   xmlns:xlink="http://www.w3.org/1999/xlink"
   xlink:type="arc"
   xlink:from="zeus"
   xlink:to="heracles"
   xlink:arcrole="is father of">
</relation> ...


For human-readable description use title-type element(s) or attribute
The value of the arcrole attribute must be a URI reference. If more descriptive or human-readable explanation is required, the title-type element(s) or attribute can be used.
...
<relation
   xmlns:xlink="http://www.w3.org/1999/xlink"
   xlink:type="arc"
   xlink:from="zeus"
   xlink:to="heracles"
   xlink:arcrole="http://www.greece.antique/relations/father"
   xlink:title="is father of">
</relation> ...