<!-- 
VoiceXML 2.1 DTD (20031228)

Copyright 1998-2003 W3C (MIT, ERCIM, Keio), All Rights Reserved. 

Permission to use, copy, modify and distribute the VoiceXML DTD and 
its accompanying documentation for any purpose and without fee is 
hereby granted in perpetuity, provided that the above copyright 
notice and this paragraph appear in all copies.  

The copyright holders make no representation about the suitability 
of the DTD for any purpose. It is provided "as is" without expressed 
or implied warranty.
-->

<!ENTITY % audio "#PCDATA | audio | enumerate | value">
<!ENTITY % bargeintype "( speech | hotword )">
<!ENTITY % boolean "(true|false)">
<!ENTITY % content.type "CDATA">
<!ENTITY % duration "CDATA">
<!ENTITY % event.handler "catch | help | noinput | nomatch | error">
<!ENTITY % event.name "NMTOKEN">
<!ENTITY % event.names "NMTOKENS">
<!ENTITY % executable.content "%audio; | assign | clear | data | disconnect | 
    exit | foreach |goto | if | log | prompt | 
	reprompt | return | script | submit | throw | var ">
<!ENTITY % expression "CDATA">
<!ENTITY % restrictedvariable.name "NMTOKEN">
<!ENTITY % variable.name "CDATA">
<!ENTITY % restrictedvariable.names "NMTOKENS">
<!ENTITY % variable.names "CDATA">
<!ENTITY % integer "CDATA">
<!ENTITY % item.attrs "name		%restrictedvariable.name; #IMPLIED 
	cond		%expression;	#IMPLIED
	expr		%expression;	#IMPLIED ">
<!ENTITY % uri "CDATA">
<!ENTITY % cache.attrs "fetchhint	(prefetch|safe)	#IMPLIED
	fetchtimeout	%duration;	#IMPLIED
	maxage		%integer;	#IMPLIED
	maxstale	%integer;	#IMPLIED">
<!ENTITY % next.attrs "next		%uri;		#IMPLIED
	expr		%expression;	#IMPLIED ">
<!ENTITY % submit.attrs "method		(get|post)	'get'
	enctype		%content.type;	'application/x-www-form-urlencoded'
	namelist	%variable.names;	#IMPLIED">
<!ENTITY % throw.attrs "event		%event.name;	#IMPLIED
	eventexpr	%expression;	#IMPLIED
	message		CDATA		#IMPLIED
	messageexpr	%expression;	#IMPLIED">
<!ENTITY % variable "block | data | field | var">
<!--================================= Root ================================-->
<!ELEMENT vxml (%event.handler; | data | form | link | menu | meta | metadata | 
                property | script | var)+>
<!ATTLIST vxml
	application %uri; #IMPLIED
	xml:base %uri; #IMPLIED
	xml:lang NMTOKEN #IMPLIED
	xmlns CDATA #REQUIRED
	xmlns:xsi CDATA #IMPLIED
	xsi:schemaLocation CDATA #IMPLIED
	version CDATA #REQUIRED
>
<!ELEMENT meta EMPTY>
<!ATTLIST meta
	name NMTOKEN #IMPLIED
	content CDATA #REQUIRED
	http-equiv NMTOKEN #IMPLIED
>

<!ELEMENT metadata ANY>

<!--================================ Prompts ==============================-->
<!-- definitions adapted from SSML 1.0 DTD -->
<!ENTITY % structure "p | s">
<!ENTITY % sentence-elements "break | emphasis | mark | phoneme | prosody | 
                              say-as | voice | sub">
<!-- addition of enumerate and value elements as 'allowed-within-sentence' 
     audio elements -->
<!ENTITY % allowed-within-sentence " %audio; | %sentence-elements; ">

<!-- Prompt is modelled on SSML 1.0 DTD speak element:
- addition of 'bargein', 'bargeintype', 'cond', 'count' and 'timeout' attributes
- removal of xmlns, xmlns:xsi, and xsi:schemaLocation attributes
- version attribute fixed as "1.0"
-->
<!ELEMENT prompt (%allowed-within-sentence; | foreach | %structure; | lexicon 
                  | metadata )*>
<!ATTLIST prompt
	bargein %boolean; #IMPLIED
	bargeintype %bargeintype; #IMPLIED
	cond %expression; #IMPLIED
	count %integer; #IMPLIED
	xml:lang NMTOKEN #IMPLIED
	timeout %duration; #IMPLIED
	xml:base %uri; #IMPLIED
	version CDATA #FIXED "1.0"
>
<!ELEMENT enumerate (%allowed-within-sentence; | %structure;)*>
<!ELEMENT reprompt EMPTY>

<!--================================= Dialogs =============================-->
<!ENTITY % input "grammar">
<!ENTITY % scope "(document | dialog)">
<!ELEMENT form (%input; | %event.handler; | filled | initial | object | link |
              property | record | script | subdialog | transfer | %variable;)*>
<!ATTLIST form
	id ID #IMPLIED
	scope %scope; "dialog"
>
<!ENTITY % accept.attrs "accept		(exact | approximate)	'exact'">
<!ELEMENT menu (%audio; | choice | data | %event.handler; | prompt | property)*>
<!ATTLIST menu
	id ID #IMPLIED
	scope %scope; "dialog"
	%accept.attrs; 
	dtmf %boolean; "false"
>
<!ELEMENT choice ( #PCDATA | %input; )*>
<!ATTLIST choice
	%cache.attrs; 
	%accept.attrs; 
	dtmf CDATA #IMPLIED
	%throw.attrs; 
	fetchaudio %uri; #IMPLIED
	%next.attrs; 
>
<!--================================ Audio Output ==============================-->
<!-- definitions adapted from SSML 1.0 DTD -->
<!ELEMENT paragraph (%allowed-within-sentence; | sentence | s)*>
<!ATTLIST paragraph
	xml:lang NMTOKEN #IMPLIED
>
<!ELEMENT sentence (%allowed-within-sentence;)*>
<!ATTLIST sentence
	xml:lang NMTOKEN #IMPLIED
>
<!ELEMENT p (%allowed-within-sentence; | sentence | s)*>
<!ATTLIST p
	xml:lang NMTOKEN #IMPLIED
>
<!ELEMENT s (%allowed-within-sentence;)*>
<!ATTLIST s
	xml:lang NMTOKEN #IMPLIED
>
<!ELEMENT voice (%allowed-within-sentence; | %structure;)*>
<!ATTLIST voice
	xml:lang NMTOKEN #IMPLIED
	gender (male | female | neutral) #IMPLIED
	age %integer; #IMPLIED
	variant %integer; #IMPLIED
	name CDATA #IMPLIED
>
<!ELEMENT prosody (%allowed-within-sentence; | %structure;)*>
<!ATTLIST prosody
	pitch CDATA #IMPLIED
	contour CDATA #IMPLIED
	range CDATA #IMPLIED
	rate CDATA #IMPLIED
	duration %duration; #IMPLIED
	volume CDATA #IMPLIED
>
<!-- Changes to SSML 1.0 DTD audio element:
- src not obligatory, addition of 'expr' and caching attributes
-->
<!ELEMENT audio (%allowed-within-sentence; | %structure; | desc)*>
<!ATTLIST audio
	src %uri; #IMPLIED
	expr %expression; #IMPLIED
	%cache.attrs; 
>
<!ELEMENT desc (#PCDATA)>
<!ELEMENT emphasis (%allowed-within-sentence;)*>
<!ATTLIST emphasis
	level (strong | moderate | none | reduced) "moderate"
>
<!-- Changes to SSML 1.0 DTD say-as element:
- allows value element as child
-->
<!ELEMENT say-as (#PCDATA | value )*>
<!ATTLIST say-as
	interpret-as NMTOKEN #REQUIRED
	format NMTOKEN #IMPLIED
	detail NMTOKEN #IMPLIED
>
<!ELEMENT sub (#PCDATA)>
<!ATTLIST sub
	alias CDATA #REQUIRED
>
<!ELEMENT phoneme (#PCDATA)>
<!ATTLIST phoneme
	ph CDATA #REQUIRED
	alphabet CDATA #IMPLIED
>
<!ELEMENT break EMPTY>
<!ATTLIST break
	time CDATA "medium"
>
<!ELEMENT mark EMPTY>
<!ATTLIST mark
	name ID #IMPLIED
	nameexpr %expression; #IMPLIED
>
<!--================================ Fields ===============================-->
<!ELEMENT field (%audio; | %event.handler; | filled | %input; | link | option |
                 prompt | property)*>
<!ATTLIST field
	%item.attrs; 
	type CDATA #IMPLIED
	slot NMTOKEN #IMPLIED
	modal %boolean; "false"
>
<!ELEMENT option (#PCDATA)>
<!ATTLIST option
	%accept.attrs; 
	dtmf CDATA #IMPLIED
	value CDATA #IMPLIED
>
<!ELEMENT var EMPTY>
<!ATTLIST var
	name %restrictedvariable.name; #REQUIRED
	expr %expression; #IMPLIED
>
<!ELEMENT initial (%audio; | %event.handler; | link | prompt | property)*>
<!ATTLIST initial
	%item.attrs; 
>
<!ELEMENT block (%executable.content;)*>
<!ATTLIST block
	%item.attrs; 
>
<!ELEMENT assign EMPTY>
<!ATTLIST assign
	name %variable.name; #REQUIRED
	expr %expression; #REQUIRED
>
<!ELEMENT clear EMPTY>
<!ATTLIST clear
	namelist %variable.names; #IMPLIED
>
<!ELEMENT value EMPTY>
<!ATTLIST value
	expr %expression; #REQUIRED
>
<!--================================== Events =============================-->
<!ENTITY % event.handler.attrs "count		%integer;	#IMPLIED
	cond		%expression;	#IMPLIED">
<!ELEMENT catch (%executable.content;)*>
<!ATTLIST catch
	event %event.names; #IMPLIED
	%event.handler.attrs; 
>
<!ELEMENT error (%executable.content;)*>
<!ATTLIST error
	%event.handler.attrs; 
>
<!ELEMENT help (%executable.content;)*>
<!ATTLIST help
	%event.handler.attrs; 
>
<!ELEMENT link (%input;)*>
<!ATTLIST link
	%cache.attrs; 
	%next.attrs; 
	fetchaudio %uri; #IMPLIED
	dtmf CDATA #IMPLIED
	%throw.attrs; 
>
<!ELEMENT noinput (%executable.content;)*>
<!ATTLIST noinput
	%event.handler.attrs; 
>
<!ELEMENT nomatch (%executable.content;)*>
<!ATTLIST nomatch
	%event.handler.attrs; 
>
<!ELEMENT throw EMPTY>
<!ATTLIST throw
	%throw.attrs; 
>
<!--============================= Grammar Input =============================-->
<!-- definitions adapted from SRGS 1.0 DTD -->
<!ENTITY % rule-expansion "#PCDATA | token | ruleref
                              | item | one-of | tag ">
<!ELEMENT ruleref EMPTY>
<!ATTLIST ruleref
	uri %uri; #IMPLIED
	type CDATA #IMPLIED
	special (NULL | VOID | GARBAGE) #IMPLIED
	xml:lang NMTOKEN #IMPLIED
>
<!ELEMENT token (#PCDATA)>
<!ATTLIST token
	xml:lang NMTOKEN #IMPLIED
>
<!ELEMENT tag (#PCDATA)>
<!ELEMENT one-of (item)+>
<!ATTLIST one-of
	xml:lang NMTOKEN #IMPLIED
>
<!ELEMENT item (%rule-expansion;)*>
<!ATTLIST item
	repeat NMTOKEN #IMPLIED
	repeat-prob NMTOKEN #IMPLIED
	weight NMTOKEN #IMPLIED
	xml:lang NMTOKEN #IMPLIED
>
<!ELEMENT rule (%rule-expansion; | example)*>
<!ATTLIST rule
	id ID #REQUIRED
	scope (private | public) "private"
>
<!ELEMENT example (#PCDATA)>
<!ELEMENT lexicon EMPTY>
<!ATTLIST lexicon
	uri %uri; #REQUIRED
	type CDATA #IMPLIED
>
<!-- Changes to SRGS 1.0 DTD grammar element:
- mixed, unordered content model 
- addition of 'scope', 'src', 'type', 'weight' and caching attributes
- 'version' attribute is optional
- removal of xmlns, xmlns:xsi, and xsi:schemaLocation attributes
-->
<!ELEMENT grammar (#PCDATA | meta | metadata | lexicon | rule)*>
<!ATTLIST grammar
	scope %scope; #IMPLIED
	src %uri; #IMPLIED
	srcexpr %expression; #IMPLIED
	type CDATA #IMPLIED
	weight CDATA #IMPLIED
	%cache.attrs; 
	tag-format %uri; #IMPLIED
	xml:base %uri; #IMPLIED
	version NMTOKEN #IMPLIED
	xml:lang NMTOKEN #IMPLIED
	root IDREF #IMPLIED
	mode (voice | dtmf) "voice"
>
<!--============================= Audio Input =============================-->
<!ELEMENT record (%audio; | %event.handler; | filled | %input; | prompt | 
                  property)*>
<!ATTLIST record
	%item.attrs; 
	type CDATA #IMPLIED
	beep %boolean; "false"
	maxtime %duration; #IMPLIED
	modal %boolean; "true"
	finalsilence %duration; #IMPLIED
	dtmfterm %boolean; "true"
>
<!--============================ Call Control ============================-->
<!ELEMENT disconnect EMPTY>
<!ATTLIST disconnect
	namelist %variable.names; #IMPLIED
>

<!ELEMENT transfer (%audio; | %event.handler; | filled | %input; | prompt | 
                    property)*>
<!ATTLIST transfer
	%item.attrs; 
	dest %uri; #IMPLIED
	destexpr %expression; #IMPLIED
	bridge %boolean; "false"
	type NMTOKEN #IMPLIED
	connecttimeout %duration; #IMPLIED
	maxtime %duration; #IMPLIED
	transferaudio %uri; #IMPLIED
	aai CDATA #IMPLIED
	aaiexpr %expression; #IMPLIED
>
<!--============================ Control Flow ============================-->
<!ENTITY % if.attrs "cond		%expression;	#REQUIRED">
<!ELEMENT if (%executable.content; | elseif | else)*>
<!ATTLIST if
	%if.attrs; 
>
<!ELEMENT elseif EMPTY>
<!ATTLIST elseif
	%if.attrs; 
>
<!ELEMENT else EMPTY>
<!ELEMENT exit EMPTY>
<!ATTLIST exit
	expr %expression; #IMPLIED
	namelist %variable.names; #IMPLIED
>
<!ELEMENT filled (%executable.content;)*>
<!ATTLIST filled
	mode (any | all) #IMPLIED
	namelist %restrictedvariable.names; #IMPLIED
>

<!-- executable content + contents of prompt  -->
<!ELEMENT foreach (%executable.content; | %sentence-elements; | 
    %structure; | metadata)*
>
<!ATTLIST foreach
    item %restrictedvariable.name; #REQUIRED
    array CDATA #REQUIRED
>

<!ELEMENT goto EMPTY>
<!ATTLIST goto
	%cache.attrs; 
	%next.attrs; 
	fetchaudio %uri; #IMPLIED
	expritem %expression; #IMPLIED
	nextitem %restrictedvariable.name; #IMPLIED
>
<!ELEMENT param EMPTY>
<!ATTLIST param
	name NMTOKEN #REQUIRED
	expr %expression; #IMPLIED
	value CDATA #IMPLIED
	valuetype (data | ref) "data"
	type CDATA #IMPLIED
>
<!ELEMENT return EMPTY>
<!ATTLIST return
	namelist %variable.names; #IMPLIED
	%throw.attrs; 
>
<!ELEMENT subdialog (%audio; | %event.handler; | filled | param | prompt | 
                     property)*>
<!ATTLIST subdialog
	%item.attrs; 
	src %uri; #IMPLIED
	srcexpr %expression; #IMPLIED
	%cache.attrs; 
	fetchaudio %uri; #IMPLIED
	%submit.attrs; 
>
<!ELEMENT submit EMPTY>
<!ATTLIST submit
	%cache.attrs; 
	%next.attrs; 
	fetchaudio %uri; #IMPLIED
	%submit.attrs; 
>
<!--========================== Miscellaneous ==============================-->
<!ELEMENT data EMPTY >
<!ATTLIST data
    name %restrictedvariable.name; #IMPLIED
    src %uri; #IMPLIED
    srcexpr %expression; #IMPLIED 
    fetchaudio  %uri;       #IMPLIED
    %submit.attrs;
    %cache.attrs;
>

<!ELEMENT log (#PCDATA | value)*>
<!ATTLIST log
	label CDATA #IMPLIED
	expr %expression; #IMPLIED
>
<!ELEMENT object (%audio; | %event.handler; | filled | param | prompt | 
                  property)*>
<!ATTLIST object
	%item.attrs; 
	%cache.attrs; 
	classid %uri; #IMPLIED
	codebase %uri; #IMPLIED
	data %uri; #IMPLIED
	type CDATA #IMPLIED
	codetype CDATA #IMPLIED
	archive %uri; #IMPLIED
>
<!ELEMENT property EMPTY>
<!ATTLIST property
	name NMTOKEN #REQUIRED
	value CDATA #REQUIRED
>
<!ELEMENT script (#PCDATA)>
<!ATTLIST script
	src %uri; #IMPLIED
	srcexpr %expression; #IMPLIED
	charset CDATA #IMPLIED
	%cache.attrs; 
>