XML Tutorial/XML Schema/hexBinary
The hexBinary datatype represents hex-encoded binary data
<source lang="xml">
<xsd:element name="hex1" type="xsd:hexBinary"/>
<hex1>FFCC9E</hex1></source>
<source lang="xml">
<xsd:element name="hex1" type="xsd:hexBinary"/>
<hex1>FFCC9E</hex1></source>