Errata exists for this version of the document.
A LocalizedText value is encoded as an xs:complexType with the following XML schema:
<xs:complexType name="LocalizedText">
<xs:sequence>
<xs:element name="Locale" type="xs:string" minOccurs="0" />
<xs:element name="Text" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>