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  <!ATTLIST xi:include 
  xmlns:xi	CDATA       #FIXED    "http://www.w3.org/2001/XInclude"
  href		CDATA       #IMPLIED
  parse		(xml|text)  "xml"
  xpointer	CDATA       #IMPLIED
  encoding	CDATA       #IMPLIED 
  accept	CDATA       #IMPLIED
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  <!ELEMENT function (synopsis?,syntax?,description?,see-also?)>
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  <!ATTLIST agi language CDATA #REQUIRED>

  <!ELEMENT manager (synopsis?,syntax?,description?,see-also?)>
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  <!ATTLIST manager language CDATA #REQUIRED>

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  <!ATTLIST parameter name CDATA "">
  <!ATTLIST parameter required (yes|no|true|false) "false">
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  <!ATTLIST argument multiple (yes|no|true|false) "false">
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