<xs:schema id="schema-images" xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
<xs:include schemaLocation="HowToContent_Common.xsd"/>
...
</xs:element>
</xs:schema>
PUBLIC "-//MOTOROLA//DTD HOW2 COMMON//EN"
"HowToContent_Common.mod">
%common;
let $xsd := db:open('AppResources')/*[@id=$xsd-id]
try {
validate:xsd($xml-file, $xsd)
} catch * {
<li style="color:red;"><p>File '{$xml-file/base-uri()}' doesn't validate against the '{$xsd/base-uri()}' schema.</p><p>{'Error [' || $err:code || ']: ' || $err:description}</p></li>
}