It seems to be an error in Schema for Datatype Definitions (normative)

Hi,

In "Schema for Datatype Definitions (normative)" of XML Schema Part 2,
http://www.w3.org/TR/xmlschema-2/#schema,
the simpleType "century" has facet "period" value="P100Y" as follow
------
<simpleType name="century" id="century">
      <annotation>
             <documentation xml:lang="en"
source="http://www.w3.org/TR/xmlschema-2/#century"/>
       </annotation>
       <restriction base="timePeriod">
              <period value="P100Y" fixed="true" id="century.period"/>
        </restriction>
</simpleType>
------
It should be "duration" as follow
             <duration value="P100Y" fixed="true"
id="century.duration"/>

Jing