<?xml version="1.0" encoding="utf-8"?>
<!ELEMENT component (software)>
<!ELEMENT PmlOIDs (pmldata*)>
<!ELEMENT pmldata (pmlname?, oidvalue?)>
<!ELEMENT pmlname (#PCDATA)>
<!ELEMENT oidvalue (#PCDATA)>

<!ELEMENT software (file_header, vayu)>
<!ELEMENT file_header (file_name, file_version, file_timestamp)>
<!ELEMENT file_name (#PCDATA)>
<!ELEMENT file_timestamp (#PCDATA)>
<!ELEMENT file_version (#PCDATA)>

<!ELEMENT vayu (PmlOIDs)>