<!-- file "http://example.com/abc/sub1.xsd" -->
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
	xmlns:abc="http://example.com/abc"
	targetNamespace="http://example.com/abc">
	<xsd:element name="sub1-elem" type="xsd:string"/>
</xsd:schema>