<!ELEMENT testresult (testname, participant, imageresult+)>
<!ELEMENT testname        (#PCDATA)>
<!ELEMENT participant     (#PCDATA)>
<!ELEMENT imageresult     (imagename, symbol*)>
<!ELEMENT imagename       (#PCDATA)>
<!ELEMENT symbol (symbolname, location?, orientation?, scalefactor?, time?,
                  confidencerate?, secondcandidate?, thirdcandidate?)>
<!ELEMENT symbolname      (#PCDATA)>
<!ELEMENT location         EMPTY>
<!ELEMENT orientation     (#PCDATA)>
<!ELEMENT scalefactor     (#PCDATA)>
<!ELEMENT time            (#PCDATA)>
<!ELEMENT confidencerate  (#PCDATA)>
<!ELEMENT secondcandidate (#PCDATA)>
<!ELEMENT thirdcandidate  (#PCDATA)>

<!ATTLIST location x1 CDATA #REQUIRED
                   y1 CDATA #REQUIRED
                   x2 CDATA #REQUIRED
                   y2 CDATA #REQUIRED>