<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE language [
    <!ELEMENT language ANY>
    <!ELEMENT text (source,output)>
    <!ELEMENT source ANY>
    <!ELEMENT output ANY>
    <!ATTLIST language
        src       CDATA    #REQUIRED
        output    CDATA    #REQUIRED
        name      CDATA    #REQUIRED
        native    CDATA    #REQUIRED
    >
]>
<language src="en" output="en" name="English" native="English">
</language>