Schemas let you enforce order and appearance of elements in mixed content.
<?xml version="1.0"?>
<SONG xmlns:xsi="http://www.w3.org/2000/10/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="mixed_song.xsd">
<TITLE>Hot Cop</TITLE>
<PHOTO ALT="Victor Willis in Cop Outfit" WIDTH="100" HEIGHT="200"/>
<COMPOSER><NAME>Mr. <GIVEN>Jacques</GIVEN> <FAMILY>Morali</FAMILY> Esq.</NAME></COMPOSER>
<COMPOSER><NAME>Mr. <GIVEN>Henri</GIVEN> L. <FAMILY>Belolo</FAMILY>, M.D.</NAME></COMPOSER>
<COMPOSER><NAME>Mr. <GIVEN>Victor</GIVEN> C. <FAMILY>Willis</FAMILY></NAME></COMPOSER>
<PRODUCER><NAME>Mr. <GIVEN>Jacques</GIVEN> S. <FAMILY>Morali</FAMILY></NAME></PRODUCER>
<PUBLISHER>PolyGram Records</PUBLISHER>
<YEAR>1978</YEAR>
<ARTIST>Village People</ARTIST>
</SONG>