Exempel 5

Exempel 5 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!DOCTYPE musik [
<!ELEMENT musik (cd, kassett, mp3)>
<!ENTITY % elementlista "(genre*, artist*, titel*)">
<!ELEMENT cd %elementlista;>
<!ELEMENT kassett %elementlista;>
<!ELEMENT mp3 %elementlista;>
<!ELEMENT genre (#PCDATA)>
<!ELEMENT artist (#PCDATA)>
<!ELEMENT titel (#PCDATA)>
]>

<musik>
<cd>
<genre>Singer/songwriter</genre>
<artist>José González</artist>
<titel>Veneer</titel>
</cd>

<kassett>
<genre>Singer/songwriter</genre>
<artist>José González</artist>
<titel>Veneer</titel>
</kassett>

<mp3>
<genre>Singer/songwriter</genre>
<artist>José González</artist>
<titel>(ingen)</titel>
</mp3>

</musik>