xsl:EQName

           An extended QName. This schema does not use the built-in type xs:QName,
           but rather defines its own QName type. This may be either a local name,
           or a prefixed QName, or a name written using the extended QName notation
           Q{uri}local
        

           Although xs:QName would define the correct validation on these
           attributes, a schema processor would expand unprefixed QNames
           incorrectly when constructing the PSVI, because (as defined in XML
           Schema errata) an unprefixed xs:QName is assumed to be in the default
           namespace, which is not the correct assumption for XSLT. The datatype is
           therefore defined as a union of NCName and QName, so that an unprefixed
           name will be validated as an NCName and will therefore not be treated as
           having the semantics of an unprefixed xs:QName.