<?xml version="1.0" standalone=”yes”?>

<!DOCTYPE root[

    <!ELEMENT root (line,lang)>

    <!ELEMENT line ANY>

    <!ENTITY film "Harry Potter series">

]>

 

<root>         

      <!—Entity reference -->

    <line>Favourite cinema is &film;</line>    

</root>

Output for the example above will be:

<root>

<line>Favourite cinema is Harry Potter series</line>

</root>