Additional Datatypes A single character, as per section 2.2 of [XML]. 1 A character encoding, as per [RFC2045]. \S+ A list of media ranges with optional accept parameters, as defined in section 14.1 of [RFC2616] as the field value of the accept request header. Comma separated list of Lengths used in defining areas. (\d+|\d+(\.\d+)?%)(,\s*(\d+|\d+(\.\d+)?%))* Date and time information, as defined by the type dateTime in [XMLSCHEMA]. Name used as destination for results of certain actions. A language code, as per [RFC3066]. A comma-separated list of language ranges. The value may be either in pixels or a percentage of the available horizontal or vertical space. Thus, the value "50%" means half of the available space. (\d+|\d+(\.\d+)?%) A location path as defined in [XPATH]. The value is a QName. alternate start next prev up contents index glossary copyright chapter section subsection appendix help bookmark meta icon p3pv1 profile A comma-separated list of media descriptors as described by [CSS]. The default is all. [^,]+(,\s*[^,]+)* One or more digits (NUMBER). [0-9]+ span: this attribute value must be an integer > 0; the default value is 1. [0-9]+ An [XMLNS]-qualified name. The shape of a region. rect circle poly default Arbitrary textual data, likely meant to be human-readable. A Uniform Resource Identifier Reference, as defined by the type anyURI in [XMLSCHEMA]. A space-separated list of URIs as defined above.