Definición de tipos de documentos (DTD) para documentos XML 
Definición de tipos de documentos (DTD) para documentos XML
Se crean documentos XML para todas las instrucciones de producción basadas en browser y todos los cockpits de fabricación por procesos. El fichero DTD "PMC_DTD_DATA.DTD", cuyo estructura se ilustra a continuación, es válido para estos documentos XML.
Definición de tipos de documento describe la referencia recíproca de los elementos que se encuentran en el documento XML.<!DOCTYPE DOCUMENT [
<!ELEMENT DOCUMENT ( LABEL, HEADER, CONTENT ) >
<!ATTLIST DOCUMENT id NMTOKEN #REQUIRED >
<!ATTLIST DOCUMENT mode ( simulation | test ) #IMPLIED >
<!ELEMENT HEADER ( META* , PHASE* ) >
<!ELEMENT META ( LABEL , VALUE ) >
<!ATTLIST META domain NMTOKEN #REQUIRED > <!-- CHARACTERISTIC -
<!ELEMENT CONTENT ( PHASE* ) >
<!ELEMENT PHASE ( LABEL? , INSTRUCTION* ) >
<!ATTLIST PHASE id NMTOKEN #REQUIRED >
<!ELEMENT INSTRUCTION ( LINE* | ( INPUT | OUTPUT | CALCULATION | EXECUTE | TEXTINPUT | TEXTOUTPUT | SIGNATURE )* ) >
<!ATTLIST INSTRUCTION id NMTOKEN #REQUIRED >
<!ATTLIST INSTRUCTION type ( simple | repeat ) #REQUIRED >
<!ATTLIST INSTRUCTION category NMTOKEN #REQUIRED >
<!ATTLIST INSTRUCTION min NMTOKEN #IMPLIED >
<!ATTLIST INSTRUCTION max NMTOKEN #IMPLIED >
<!ELEMENT LINE ( ( INPUT | OUTPUT | CALCULATION | EXECUTE | TEXTINPUT | TEXTOUTPUT | SIGNATURE )* ) >
<!ELEMENT INPUT ( LABEL?, TIP?, HELPVALUE* ) >
<!ATTLIST INPUT id NMTOKEN #REQUIRED >
<!ATTLIST INPUT domain NMTOKEN #REQUIRED >
<!ATTLIST INPUT format NMTOKEN #REQUIRED >
<!ATTLIST INPUT lenvis NMTOKEN #REQUIRED >
<!ATTLIST INPUT lendef NMTOKEN #REQUIRED >
<!ATTLIST INPUT vhelp ( true | false ) "false" > <!-- value help defined -
<!ELEMENT OUTPUT ( LABEL?, TIP?, VALUE? ) >
<!ATTLIST OUTPUT id NMTOKEN #REQUIRED >
<!ATTLIST OUTPUT domain NMTOKEN #REQUIRED >
<!ATTLIST OUTPUT format NMTOKEN #REQUIRED >
<!ATTLIST OUTPUT lenvis NMTOKEN #REQUIRED >
<!ATTLIST OUTPUT lendef NMTOKEN #REQUIRED >
<!ATTLIST OUTPUT constant ( true | false ) "false" > <!-- constant value -
<!ELEMENT CALCULATION ( LABEL?, TIP? )>
<!ATTLIST CALCULATION id NMTOKEN #REQUIRED >
<!ATTLIST CALCULATION domain NMTOKEN #REQUIRED >
<!ATTLIST CALCULATION format NMTOKEN #REQUIRED >
<!ATTLIST CALCULATION lenvis NMTOKEN #REQUIRED >
<!ATTLIST CALCULATION lendef NMTOKEN #REQUIRED >
<!ELEMENT EXECUTE ( LABEL? )>
<!ATTLIST EXECUTE id NMTOKEN #REQUIRED >
<!ATTLIST EXECUTE function NMTOKEN #REQUIRED >
<!ATTLIST EXECUTE ondisplay ( true | false ) "false" >
<!ELEMENT TEXTINPUT ( LABEL?, TIP? ) >
<!ATTLIST TEXTINPUT id NMTOKEN #REQUIRED >
<!ATTLIST TEXTINPUT domain NMTOKEN #REQUIRED >
<!ATTLIST TEXTINPUT vhelp ( true | false ) "false" >
<!ATTLIST TEXTINPUT check ( true | false ) "false" >
<!ELEMENT TEXTOUTPUT ( LABEL?, TIP?, VALUE? ) >
<!ATTLIST TEXTOUTPUT id NMTOKEN #REQUIRED >
<!ATTLIST TEXTOUTPUT domain NMTOKEN #REQUIRED >
<!ATTLIST TEXTOUTPUT constant ( true | false ) "false" >
<!ELEMENT SIGNATURE ( LABEL?, TIP?, HELPVALUE* ) >
<!ATTLIST SIGNATURE id NMTOKEN #REQUIRED >
<!ATTLIST SIGNATURE domain NMTOKEN #REQUIRED >
<!ATTLIST SIGNATURE format NMTOKEN #REQUIRED >
<!ATTLIST SIGNATURE lenvis NMTOKEN #REQUIRED >
<!ATTLIST SIGNATURE lendef NMTOKEN #REQUIRED >
<!ATTLIST SIGNATURE strategy ( true | false ) "false" >
<!ATTLIST SIGNATURE vhelp ( true | false ) "false" >
<!ATTLIST SIGNATURE check ( true | false ) "false" >
<!ELEMENT LABEL ( #PCDATA )>
<!ELEMENT TIP ( #PCDATA )>
<!ELEMENT HELPVALUE ( #PCDATA )>
<!ELEMENT VALUE ( #PCDATA )>
]>