test/relaxng/demo3.rng - third_party/libxml2 - Git at Google

 <?xml version="1.0" encoding="utf-8"?>
 <grammar xmlns="http://relaxng.org/ns/structure/1.0" xmlns:t="http://www.thaiopensource.com/ns/annotations" xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">

    <define name="TEI.prose" combine="interleave">
       <ref name="IGNORE"/>
    </define>

 </grammar>
	<?xml version="1.0" encoding="utf-8"?>
	<grammar xmlns="http://relaxng.org/ns/structure/1.0" xmlns:t="http://www.thaiopensource.com/ns/annotations" xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">

	<define name="TEI.prose" combine="interleave">
	<ref name="IGNORE"/>
	</define>

	</grammar>