Appendix A: SALT DTD

<!--            DTD for SALT 1.0 (2002)                       -->

<!ENTITY % boolean "(true | false)">
<!ENTITY % confidence.value "CDATA">  <!-- should be a float between 0.0 and 1.0 -->
<!ENTITY % content.type "CDATA">
<!ENTITY % expression "CDATA">
<!ENTITY % milliseconds "CDATA">
<!ENTITY % object.method "CDATA">
<!ENTITY % listen.mode "(automatic | multiple | single)">
<!ENTITY % script.statement "CDATA">
<!ENTITY % script.variable "CDATA">
<!ENTITY % uri "CDATA">
<!ENTITY % xpath.query "CDATA">
<!ENTITY % xpattern.string "CDATA">

<!ELEMENT bind EMPTY>
<!ATTLIST bind
    targetattribute     %script.variable;       "value"
    targetelement       %script.variable;       #REQUIRED
    targetmethod        %object.method;     #IMPLIED
    test            %xpattern.string;       #IMPLIED
    value           %xpath.query;       #IMPLIED
>

<!ELEMENT content (#PCDATA)>
<!ATTLIST content
    href            %uri;           #REQUIRED
    type            %content.type;      #IMPLIED
>

<!ELEMENT dtmf (grammar | bind | param)* >
<!ATTLIST dtmf
    id          ID          #IMPLIED
    endsilence      %milliseconds;      #IMPLIED
    preflush            %boolean;           "false"
    initialtimeout      %milliseconds;      #IMPLIED
    interdigittimeout       %milliseconds;      #IMPLIED
    onerror         %script.statement;      #IMPLIED
    onkeypress      %script.statement;      #IMPLIED
    onnoreco            %script.statement;      #IMPLIED
    onreco          %script.statement;      #IMPLIED
    onsilence           %script.statement;      #IMPLIED
>

<!ELEMENT grammar ANY>
<!ATTLIST grammar
    name            NMTOKEN         #IMPLIED
    src         %uri;           #IMPLIED
    type            %content.type;      "application/srgs+xml"
    xmlns           %uri;           #IMPLIED
    lang            CDATA           #IMPLIED
>

<!ELEMENT listen (record | grammar | bind | param)* >
<!ATTLIST listen
    id          ID          #IMPLIED
    initialtimeout      %milliseconds;      #IMPLIED
    babbletimeout       %milliseconds;      #IMPLIED
    beep            %boolean;           "false"    
    maxtimeout      %milliseconds;      #IMPLIED
    endsilence      %milliseconds;      #IMPLIED
    reject          %confidence.value;      #IMPLIED
    lang            CDATA           #IMPLIED
    mode            %listen.mode;       "automatic"
    accesskey           CDATA           #IMPLIED
    style           CDATA           "visibility: hidden"
    onerror         %script.statement;      #IMPLIED
    onnoreco            %script.statement;      #IMPLIED
    onreco          %script.statement;      #IMPLIED
    onsilence           %script.statement;      #IMPLIED
    onspeechdetected        %script.statement;      #IMPLIED
>
<!-- NOTE: accesskey and style attributes are used only in HTML profiles -->

<!ELEMENT param ANY>
<!ATTLIST param
    xmlns           %uri;               #IMPLIED
    name            CDATA           #REQUIRED
>

<!ELEMENT prompt (#PCDATA | content | value | param)* >
<!ATTLIST prompt
    id          ID          #IMPLIED
    bargein         %boolean;           "true"
    prefetch            %boolean;           "false"
    xmlns           %uri;           #IMPLIED
    lang            CDATA           #IMPLIED
    accesskey           CDATA           #IMPLIED
    style           CDATA           "visibility: hidden"
    onbargein           %script.statement;      #IMPLIED
    onbookmark      %script.statement;      #IMPLIED
    oncomplete      %script.statement;      #IMPLIED
    onerror         %script.statement;      #IMPLIED
>
<!-- NOTE: accesskey and style attributes are used only in HTML profiles -->

<!-- default audio MEDIA type conforms to RFC 2361 -->
<!ELEMENT record EMPTY>
<!ATTLIST record
    type            %content.type;      "audio/wav;codec=g711"  
>

<!ELEMENT smex (bind | param)* >
<!ATTLIST smex
    id          ID          #IMPLIED
    sent            CDATA           #IMPLIED
    timer           %milliseconds;      #IMPLIED
    onerror         %script.statement;      #IMPLIED
    onreceive           %script.statement;      #IMPLIED
    ontimeout           %script.statement;      #IMPLIED
>

<!ELEMENT value EMPTY>
<!ATTLIST value
    targetattribute     %script.variable;       #IMPLIED
    targetelement       %script.variable;       #IMPLIED
>