/*
   This schema declares the subset of XLink attributes used for BrainMetaL
   'link' elements.  We could refer to the outside world here, but this would
   be overkill for one attribute..
 */
targetNamespace "http://www.w3.org/1999/xlink"

/* Reference to linked resource; should be a URL or URN. */
attribute href { xs:anyURI }

/*
   Should be a URL referring to a relation defined in a file conforming to
   "relations.xsd".
*/
attribute role { xs:anyURI }