<!-- <manualpage> is the root element -->
<!ELEMENT manualpage (relativepath, parentdocument?, title, summary?,
seealso*, section*)>
-
-<!-- The path to the root of the documentation from the current doc -->
-<!ELEMENT relativepath EMPTY>
-<!ATTLIST relativepath href CDATA #REQUIRED >
-
-<!-- The path and title of the parent document -->
-<!ELEMENT parentdocument (#PCDATA)>
-<!ATTLIST parentdocument href CDATA #REQUIRED >