Mostra la font per a DTD-struts2

A continuació es mostra el DTD del fitxer struts.xml:
<source lang="xml">
<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd">
<!ELEMENT struts (package|include|bean|constant)*> 
<!ELEMENT package (result-types?, interceptors?,
    default-interceptor-ref?, default-action-ref?, global-results?,
    global-exception-mappings?, action*)>
<!ATTLIST package
    name CDATA #REQUIRED
    extends CDATA #IMPLIED
    namespace CDATA #IMPLIED
    abstract CDATA #IMPLIED
    externalReferenceResolver NMTOKEN #IMPLIED
>
<!ELEMENT result-types (result-type+)>
<!ELEMENT result-type (param*)>
<!ATTLIST result-type
    name CDATA #REQUIRED
    class CDATA #REQUIRED
    default (true|false) "false"
>
<!ELEMENT interceptors (interceptor|interceptor-stack)+>
<!ELEMENT interceptor (param*)>
<!ATTLIST interceptor
    name CDATA #REQUIRED
    class CDATA #REQUIRED
>
<!ELEMENT interceptor-stack (interceptor-ref+)>
<!ATTLIST interceptor-stack
    name CDATA #REQUIRED
>
<!ELEMENT interceptor-ref (param*)>
    <!ATTLIST interceptor-ref
    name CDATA #REQUIRED
>
<!ELEMENT default-interceptor-ref (param*)>
    <!ATTLIST default-interceptor-ref
    name CDATA #REQUIRED
>
<!ELEMENT default-action-ref (param*)>
<!ATTLIST default-action-ref
    name CDATA #REQUIRED
>
<!ELEMENT global-results (result+)>
<!ELEMENT global-exception-mappings (exception-mapping+)>
<!ELEMENT action (param|result|interceptor-ref|exception-mapping)*>
<!ATTLIST action
    name CDATA #REQUIRED
    class CDATA #IMPLIED
    method CDATA #IMPLIED
    converter CDATA #IMPLIED
>
<!ELEMENT param (#PCDATA)>
<!ATTLIST param
    name CDATA #REQUIRED
>
<!ELEMENT result (#PCDATA|param)*>
<!ATTLIST result
    name CDATA #IMPLIED
    type CDATA #IMPLIED
>
<!ELEMENT exception-mapping (#PCDATA|param)*>
<!ATTLIST exception-mapping
    name CDATA #IMPLIED
    exception CDATA #REQUIRED
    result CDATA #REQUIRED
>
<!ELEMENT include (#PCDATA)>
<!ATTLIST include
    file CDATA #REQUIRED
>
<!ELEMENT bean (#PCDATA)>
<!ATTLIST bean
    type CDATA #IMPLIED
    name CDATA #IMPLIED
    class CDATA #REQUIRED
    scope CDATA #IMPLIED
    static CDATA #IMPLIED
    optional CDATA #IMPLIED
>
<!ELEMENT constant (#PCDATA)>
<!ATTLIST constant
    name CDATA #REQUIRED
    value CDATA #REQUIRED
>

</source>