<!--
     DTD for CC & CEM, 2022.

     Element prefixes:

	f   Funtional
	fc  Functional Class
	ff  Functional Family
	fco Functional Component
	fe  Functional Element

	a   Assurance
	ac  Assurance Class
	af  Assurance Family
	aco Assurance Component
	ae  Assurance Element

	m   Methodology
	ma  Methodology Evaluation Activity
	msa Methodology Evaluation Sub-Activity
  -->

<!ELEMENT cc		(clause|f-class|a-class)+>
<!ATTLIST cc		version  CDATA	#REQUIRED
			revision CDATA	#REQUIRED>

<!-- General text clauses -->

<!ENTITY % text		"subclause|para|figure|acronym|biblioentry|glossentry|table">
<!ENTITY % textrun	"#PCDATA|xref|url|bold|italic|sub|equation|footnote|list">

<!ELEMENT clause	(%text;)*>
<!ATTLIST clause	title     CDATA                  #REQUIRED
			type     (normal|annex)          "normal"
			category (normative|informative) "normative"
			id	ID                      #REQUIRED
			patch	IDREF			#IMPLIED>

<!ELEMENT subclause	(%text;)*>
<!ATTLIST subclause	title	CDATA	#REQUIRED
			id	ID	#REQUIRED
			patch	IDREF	#IMPLIED>

<!ELEMENT para		(%textrun;)*>
<!ATTLIST para		type	(normal|note|example)	 	"normal"
			title	CDATA 				#IMPLIED
			id	ID				#IMPLIED
			patch	IDREF				#IMPLIED>

<!ELEMENT xref		EMPTY>
<!ATTLIST xref 		id 		IDREF			#IMPLIED
	 		part		CDATA			#IMPLIED
	 		show		(title|link|none|id)	"link"
			patch		IDREF			#IMPLIED>

<!ELEMENT url		EMPTY>
<!ATTLIST url 		id 		CDATA			#REQUIRED
			title		CDATA			#IMPLIED
			patch		IDREF			#IMPLIED>

<!ELEMENT bold		(#PCDATA|xref|italic)*>
<!ELEMENT italic	(#PCDATA|xref|bold)*>
<!ELEMENT sub		(#PCDATA|xref)*>

<!ELEMENT equation	EMPTY>
<!ATTLIST equation	entity	CDATA	#REQUIRED
			title	CDATA	#IMPLIED
			width   CDATA   #IMPLIED
			height  CDATA   #IMPLIED
			id	ID	#IMPLIED
			patch	IDREF	#IMPLIED>

<!ELEMENT footnote	(#PCDATA|xref|list|bold|italic)*>
<!ATTLIST footnote	id	ID	#IMPLIED
			patch	IDREF	#IMPLIED>

<!ELEMENT list		(item)+>
<!ATTLIST list		id	ID	#IMPLIED
			type	(itemized|enumerated) 	"enumerated"
			patch	IDREF	#IMPLIED>

<!ELEMENT item		(%textrun;|para|assignment|selection)*>
<!ATTLIST item		id	ID	#IMPLIED
			patch	IDREF	#IMPLIED>

<!ELEMENT figure	EMPTY>
<!ATTLIST figure	entity	CDATA	#REQUIRED
			title	CDATA	#REQUIRED
			width   CDATA   #IMPLIED
			height  CDATA   #IMPLIED
			id	ID	#REQUIRED
			patch	IDREF	#IMPLIED>

<!ELEMENT acronym	(acronymterm,acronymdef)>
<!ATTLIST acronym	id	ID	#REQUIRED
			patch	IDREF	#IMPLIED>

<!ELEMENT acronymterm	(#PCDATA)>
<!ATTLIST acronymterm	patch	IDREF	#IMPLIED>

<!ELEMENT acronymdef	(#PCDATA)>
<!ATTLIST acronymdef	patch	IDREF	#IMPLIED>

<!ELEMENT biblioentry	(biblioterm,bibliodef)>
<!ATTLIST biblioentry	id	ID	#REQUIRED
			patch	IDREF	#IMPLIED>

<!ELEMENT biblioterm	(#PCDATA)>
<!ATTLIST biblioterm	patch	IDREF	#IMPLIED>

<!ELEMENT bibliodef	(#PCDATA)>
<!ATTLIST bibliodef	patch	IDREF	#IMPLIED>

<!ELEMENT glossentry	(glossterm,glossalt?,glossdef,glosssource?,glossnote*)>
<!ATTLIST glossentry	id	ID	#REQUIRED
			patch	IDREF	#IMPLIED>

<!ELEMENT glossterm	(#PCDATA)>
<!ATTLIST glossterm	patch	IDREF	#IMPLIED>

<!ELEMENT glossalt	(#PCDATA)>
<!ATTLIST glossalt	patch	IDREF	#IMPLIED>

<!ELEMENT glossdef	(#PCDATA)>
<!ATTLIST glossdef	patch	IDREF	#IMPLIED>

<!ELEMENT glosssource	(#PCDATA)>
<!ATTLIST glosssource	patch	IDREF	#IMPLIED>

<!ELEMENT glossnote	(%textrun;)*>
<!ATTLIST glossnote	patch	IDREF	#IMPLIED>

<!ELEMENT foreword	(%text;)*>
<!ATTLIST foreword	patch	IDREF	#IMPLIED>

<!ELEMENT legalnotice	(%text;)*>
<!ATTLIST legalnotice	patch	IDREF	#IMPLIED>

<!-- Simplified table model, resembles CALS -->

<!ELEMENT table		(title?,tgroup)>
<!ATTLIST table		id	ID	#IMPLIED
			width	CDATA 	#IMPLIED
			patch	IDREF	#IMPLIED>

<!ELEMENT title         (#PCDATA|xref)*>

<!ELEMENT tgroup	(thead?,tfoot?,tbody)>
<!ATTLIST tgroup	cols CDATA #REQUIRED>

<!ELEMENT thead		(row+)>
<!ELEMENT tfoot		(row+)>
<!ELEMENT tbody		(row+)>

<!ELEMENT row		(entry+)>

<!ELEMENT entry		(%textrun;|assignment|selection)*>
<!ATTLIST entry		rowspan 	CDATA			#IMPLIED
			columnspan	CDATA			#IMPLIED
			width		CDATA 			#IMPLIED
			align	(left|right|center|justify)	"left"
			style		CDATA 			#IMPLIED
			patch		IDREF			#IMPLIED>

<!-- Functional paradigm -->

<!ELEMENT f-class		(fc-introduction,
				 fc-informative-notes,
				 f-family+)>
<!ATTLIST f-class		name	CDATA	#REQUIRED
				id	ID	#REQUIRED
				patch	IDREF	#IMPLIED>

<!ELEMENT fc-introduction	(%text;)*>
<!ELEMENT fc-informative-notes	(%text;)*>

<!ELEMENT f-family              (ff-behaviour,
				 ff-application-notes?,
				 ff-user-notes?,
				 ff-evaluator-notes?,
                                 f-component+)>
<!ATTLIST f-family              name	CDATA	#REQUIRED
                                id	ID	#REQUIRED
				patch	IDREF	#IMPLIED>

<!ELEMENT ff-behaviour		(%text;)*>
<!ATTLIST ff-behaviour		patch	IDREF	#IMPLIED>

<!ELEMENT ff-application-notes	(%text;)*>
<!ATTLIST ff-application-notes	patch	IDREF	#IMPLIED>

<!ELEMENT ff-user-notes		(%text;)*>
<!ATTLIST ff-user-notes		patch	IDREF	#IMPLIED>

<!ELEMENT ff-evaluator-notes	(%text;)*>
<!ATTLIST ff-evaluator-notes	patch	IDREF	#IMPLIED>

<!ELEMENT f-component 	 	    	(fco-hierarchical?,
					 fco-dependencies?,
					 fco-rationale?,
					 fco-user-notes?,
					 fco-evaluator-notes?,
					 fco-levelling,
					 fco-management*,
					 fco-audit*,
					 f-element+)>
<!ATTLIST f-component			name 	CDATA	#REQUIRED
					id   	ID	#REQUIRED
					patch	IDREF	#IMPLIED>

<!ELEMENT fco-hierarchical		EMPTY>
<!ATTLIST fco-hierarchical		fcomponent IDREF #REQUIRED
					patch	IDREF	#IMPLIED>

<!ELEMENT fco-dependencies		(fco-or|fco-dependsoncomponent)*>
<!ATTLIST fco-dependencies		patch	IDREF	#IMPLIED>

<!ELEMENT fco-or			(fco-dependsoncomponent)+>
<!ATTLIST fco-or			patch	IDREF	#IMPLIED>

<!ELEMENT fco-dependsoncomponent	EMPTY>
<!ATTLIST fco-dependsoncomponent	fcomponent IDREF #REQUIRED
					patch	IDREF	#IMPLIED>

<!ELEMENT fco-rationale			(%text;)*>
<!ELEMENT fco-user-notes		(%text;)*>
<!ELEMENT fco-evaluator-notes		(%text;)*>
<!ELEMENT fco-levelling			(%text;)*>

<!ELEMENT fco-management		(#PCDATA|xref)*>
<!ATTLIST fco-management		id	ID 	#IMPLIED
					equal	IDREF	#IMPLIED
					patch	IDREF	#IMPLIED>

<!ELEMENT fco-audit			(#PCDATA|xref)*>
<!ATTLIST fco-audit			level (minimal|basic|detailed) #IMPLIED
					id	ID 	#IMPLIED
					equal	IDREF	#IMPLIED
					patch	IDREF	#IMPLIED>

<!ENTITY % elementcontent	"#PCDATA|xref|url|bold|italic|sub|equation|footnote|list|assignment|selection|table">

<!ELEMENT f-element		(%elementcontent;)*>
<!ATTLIST f-element		id	ID	#REQUIRED
				boldfrom IDREF	#IMPLIED
				patch	IDREF	#IMPLIED>

<!ELEMENT assignment		(assignmentitem,assignmentnotes?)>
<!ATTLIST assignment		id	ID	#IMPLIED
				patch	IDREF	#IMPLIED>

<!ELEMENT assignmentitem	(%elementcontent;)*>
<!ATTLIST assignmentitem	patch	IDREF	#IMPLIED>

<!ELEMENT assignmentnotes	(%text;)*>
<!ATTLIST assignmentnotes	patch	IDREF	#IMPLIED>

<!ELEMENT selection		(selectionitem+,selectionnotes?)>
<!ATTLIST selection		id		ID		#IMPLIED
                                exclusive	(YES|NO)	"NO"
				patch		IDREF		#IMPLIED>

<!ELEMENT selectionitem		(%elementcontent;)*>
<!ATTLIST selectionitem		patch	IDREF	#IMPLIED>

<!ELEMENT selectionnotes	(%text;)*>
<!ATTLIST selectionnotes	patch	IDREF	#IMPLIED>

<!-- Assurance paradigm -->

<!ELEMENT a-class		(ac-introduction,
				ac-overview?,
				ac-application-notes?,
				ma-introduction?,
				ma-objectives?,
				ma-application-notes?,
				a-family+)>
<!ATTLIST a-class		name	CDATA	#REQUIRED
                                id	ID	#REQUIRED
				patch	IDREF	#IMPLIED>

<!ELEMENT ac-introduction	(%text;)*>
<!ELEMENT ac-overview		(%text;)*>
<!ELEMENT ac-application-notes	(%text;)*>
<!ELEMENT ma-introduction	(%text;)*>
<!ELEMENT ma-objectives		(%text;)*>
<!ELEMENT ma-application-notes	(%text;)*>

<!ELEMENT a-family		(af-objectives?,
				af-overview?,
				af-levelling-criteria?,
				af-application-notes?,
				a-component+)>
<!ATTLIST a-family		name	CDATA	#REQUIRED
				id	ID	#REQUIRED
				patch	IDREF	#IMPLIED>

<!ELEMENT af-objectives		(%text;)*>
<!ELEMENT af-overview		(%text;)*>
<!ELEMENT af-levelling-criteria	(%text;)*>
<!ELEMENT af-application-notes	(%text;)*>

<!ELEMENT a-component			(aco-hierarchical?,
					 aco-dependencies*,
					 aco-objectives?,
					 aco-application-notes?,
					 msa-objectives?,
					 msa-application-notes?,
					 msa-input?,
					 (ae-developer|ae-content|ae-evaluator)*)>

<!ATTLIST a-component			name	CDATA	#REQUIRED
					id	ID	#REQUIRED
					patch	IDREF	#IMPLIED>

<!ELEMENT aco-hierarchical		EMPTY>
<!ATTLIST aco-hierarchical		acomponent	IDREF #REQUIRED
					patch		IDREF #IMPLIED>

<!ELEMENT aco-dependencies		(aco-or|aco-dependsoncomponent)*>
<!ATTLIST aco-dependencies		patch	IDREF	#IMPLIED>

<!ELEMENT aco-or			(aco-dependsoncomponent)+>
<!ATTLIST aco-or			patch	IDREF	#IMPLIED>

<!ELEMENT aco-dependsoncomponent	EMPTY>
<!ATTLIST aco-dependsoncomponent	acomponent IDREF #REQUIRED
					patch	IDREF	#IMPLIED>

<!ELEMENT aco-objectives		(%text;)*>
<!ATTLIST aco-objectives		patch	IDREF	#IMPLIED>

<!ELEMENT aco-application-notes		(%text;)*>
<!ATTLIST aco-application-notes		patch	IDREF	#IMPLIED>

<!ELEMENT msa-objectives		(%text;)*>
<!ATTLIST msa-objectives		patch	IDREF	#IMPLIED>

<!ELEMENT msa-application-notes		(%text;)*>
<!ATTLIST msa-application-notes		patch	IDREF	#IMPLIED>

<!ELEMENT msa-input			(%text;)*>
<!ATTLIST msa-input			patch	IDREF	#IMPLIED>

<!ELEMENT ae-developer		(%elementcontent;|m-workunit)*>
<!ATTLIST ae-developer		id	 ID	#REQUIRED
				boldfrom IDREF	#IMPLIED
				patch	 IDREF	#IMPLIED>

<!ELEMENT ae-content		(%elementcontent;)*>
<!ATTLIST ae-content		id	 ID	#REQUIRED
				boldfrom IDREF	#IMPLIED
				patch	 IDREF	#IMPLIED>

<!ELEMENT ae-evaluator		(%elementcontent;|m-workunit)*>
<!ATTLIST ae-evaluator		id	 ID	#REQUIRED
				boldfrom IDREF	#IMPLIED
				patch	 IDREF	#IMPLIED>

<!ELEMENT m-workunit		(ae-dc-element*,(%text;)*)>
<!ATTLIST m-workunit		id	ID	#IMPLIED
				patch	IDREF	#IMPLIED>

<!ELEMENT ae-dc-element		EMPTY>
<!ATTLIST ae-dc-element		id 	IDREF	#REQUIRED
				patch	IDREF	#IMPLIED>