A DTD for XML-RPC

<!ELEMENT methodCall (methodName, params)>
<!ELEMENT methodName (#PCDATA)>
<!ELEMENT params     (param*)>
<!ELEMENT param      (value)>
<!ELEMENT value      
   (i4|int|string|dateTime.iso8601|double|base64|struct|array)>
<!ELEMENT i4               (#PCDATA)>
<!ELEMENT int              (#PCDATA)>
<!ELEMENT string           (#PCDATA)>
<!ELEMENT dateTime.iso8601 (#PCDATA)>
<!ELEMENT double           (#PCDATA)>
<!ELEMENT base64           (#PCDATA)>

<!ELEMENT array            (data)>
<!ELEMENT data             (value*)>
<!ELEMENT struct           (member+)>
<!ELEMENT member           (name, value)>
<!ELEMENT name             (#PCDATA)>

<!ELEMENT methodResponse   (params | fault)>
<!ELEMENT fault            (value)>
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