ICE Version 1.01
Appendix A. Complete ICE DTD
From: http://www.icestandard.org/spec/SPEC-ICE1.01-20000511.html
See also: http://xml.coverpages.org/ice.html


<!-- ============================================================ -->
<!--                                                              -->
<!--              ICE  1.1  Document Type Definition              -->
<!--                        15 November 1999                      -->
<!--                                                              -->
<!-- ============================================================ -->


<!-- ============================================================ -->
<!-- = For protocol level ice extensions, change the value of     -->
<!-- = extended.protocol to "INCLUDE" and the value of            -->
<!-- = standard.protocol to "IGNORE".  Be SURE to also provide    -->
<!-- = content models for the extension request and extension     -->
<!-- = response elements.  Also, be SURE to declare the elements  -->
<!-- = and associated attribute lists for the extended requests   -->
<!-- = and responses below.                                       -->
<!-- = ( ARE YOU VERY SURE YOU WANT TO DO THIS? ?REALLY-REALLY? ) -->
<!-- ============================================================ -->
<!ENTITY % extended.protocol "IGNORE"  >
<!ENTITY % standard.protocol "INCLUDE" >


<![%extended.protocol;[


<!-- ============================================================ -->
<!-- = Place extended protocol request content model in value of  -->
<!-- = cm.extension-request below.                                -->
<!-- ============================================================ -->
<!ENTITY % cm.extension-request  "EMPTY" >


<!-- ============================================================ -->
<!-- = Place extended protocol response content model in value of -->
<!-- = cm.extension-response below.                               -->
<!-- ============================================================ -->
<!ENTITY % cm.extension-response "EMPTY" >


]]>


<![%standard.protocol;[


<!ENTITY % cm.extension-request  "EMPTY" >
<!ENTITY % cm.extension-response "EMPTY" >


]]>


<!ENTITY % cm.messages "ice-request+ |
                        ice-response+ |
                        ice-unsolicited-now |
                        ice-unsolicited-request+ |
                        ice-unsolicited-response+" >


<!ELEMENT ice-payload   (ice-header, (%cm.messages;)) >
<!ATTLIST ice-payload
          ice.version      CDATA           #REQUIRED
          payload-id       CDATA           #REQUIRED
          timestamp        CDATA           #REQUIRED
>
<!-- NOTE that in ICE 1.1 sender-location MUST be specified; it
        is optional here for interoperability.
-->


<!ELEMENT ice-header    (ice-sender, ice-receiver?, ice-user-agent?) >


<!ELEMENT ice-sender    EMPTY >
<!ATTLIST ice-sender
          name             CDATA           #REQUIRED
          role             (subscriber | syndicator)
                                           #REQUIRED
          sender-id        CDATA           #REQUIRED
          location         CDATA           #IMPLIED
>


<!ELEMENT ice-receiver          EMPTY >
<!ATTLIST ice-receiver
          name                  CDATA           #REQUIRED
          receiver-id           CDATA           #REQUIRED
>


<!ELEMENT ice-user-agent        (#PCDATA) >


<!ELEMENT ice-code              (#PCDATA) >
<!ATTLIST ice-code
          message-id            CDATA           #IMPLIED
          numeric               CDATA           #REQUIRED
          package-id            CDATA           #IMPLIED
          payload-id            CDATA           #IMPLIED
          phrase                CDATA           #REQUIRED
          xml:lang              CDATA           #IMPLIED
>


<!-- ============================================================ -->
<!--                    Declaration of ICE requests.              -->
<!-- ============================================================ -->


<!ENTITY % sub.requests "ice-cancel |
                         ice-get-catalog |
                         ice-get-package |
                         ice-get-sequence |
                         ice-repair-item" >


<!ENTITY % syn.requests "ice-package+ |
                         ice-send-confirmations" >


<![%standard.protocol;[


<!ENTITY % com.requests "ice-change-subscription |
                         ice-code |
                         ice-get-events |
                         ice-get-status |
                         ice-nop |
                         ice-notify |
                         ice-offer " >


]]>


<![%extended.protocol;[


<!ENTITY % com.requests "ice-change-subscription |
                         ice-code |
                         ice-get-events |
                         ice-get-status |
                         ice-nop |
                         ice-notify |
                         ice-extension-request"  >


]]>


<!ELEMENT ice-request           ( %sub.requests; |
                                  %syn.requests; |
                                  %com.requests; ) >
<!ATTLIST ice-request
          request-id            CDATA           #REQUIRED
>


<!ELEMENT ice-cancel            EMPTY >
<!ATTLIST ice-cancel
          xml:lang              CDATA           #REQUIRED
          reason                CDATA           #REQUIRED
          subscription-id       CDATA           #REQUIRED
>


<!ELEMENT ice-change-subscription       EMPTY >
<!ATTLIST ice-change-subscription
          subscription-id       CDATA           #REQUIRED
>


<!-- ice-code defined above -->


<!ELEMENT ice-get-catalog       EMPTY >


<!ELEMENT ice-get-events        EMPTY >
<!ATTLIST ice-get-events
          format                NMTOKENS        #IMPLIED
          start                 CDATA           #IMPLIED
          stop                  CDATA           #IMPLIED
          subscription-id       CDATA           #IMPLIED
>


<!ELEMENT ice-get-package       EMPTY >
<!ATTLIST ice-get-package
          current-state         CDATA           #REQUIRED
          parameter             CDATA           #IMPLIED
          subscription-id       CDATA           #REQUIRED
>


<!ELEMENT ice-get-sequence      (ice-package-state+) >
<!ATTLIST ice-get-sequence
          current-state         CDATA           #REQUIRED
          subscription-id       CDATA           #REQUIRED
>


<!ELEMENT ice-package-state     EMPTY >
<!ATTLIST ice-package-state
          package-id            CDATA           #REQUIRED
          new-state             CDATA           #REQUIRED
>


<!ELEMENT ice-get-status        EMPTY >
<!ATTLIST ice-get-status
          subscription-id       CDATA           #IMPLIED
>


<!ELEMENT ice-nop               EMPTY >


<!ELEMENT ice-notify            (ice-text+) >
<!ATTLIST ice-notify
          priority              (1 | 2 | 3 | 4 | 5)
                                                #REQUIRED
>


<![%extended.protocol;[


<!ELEMENT ice-extension-request %cm.extension-request >


]]>


<!ELEMENT ice-text              (#PCDATA) >
<!ATTLIST ice-text
          xml:lang              CDATA           #IMPLIED
>


<!-- ice-offer is declared below. -->


<!-- ice-package is declared below -->


<!ELEMENT ice-repair-item       EMPTY >
<!ATTLIST ice-repair-item
          current-state         CDATA           #REQUIRED
          subscription-element  CDATA           #REQUIRED
          subscription-id       CDATA           #REQUIRED
>


<!ELEMENT ice-send-confirmations        EMPTY >
<!ATTLIST ice-send-confirmations
          subscription-id       CDATA           #IMPLIED
>


<!-- ============================================================ -->
<!--                   Declaration of ICE responses.              -->
<!-- ============================================================ -->


<!ENTITY % uni.responses        "ice-cancellation |
                                 ice-catalog |
                                 ice-location |
                                 ice-offer |
                                 ice-package+ |
                                 ice-sequence |
                                 ice-subscription" >


<![%standard.protocol;[


<!ENTITY % com.responses        "ice-events |
                                 ice-status" >


]]>


<![%extended.protocol;[


<!ENTITY % com.responses        "ice-events |
                                 ice-status |
                                 ice-extension-response" >


]]>


<!ELEMENT ice-response          (ice-code, (%uni.responses; |
                                            %com.responses;)?) >
<!ATTLIST ice-response
          response-id           CDATA           #REQUIRED
          unsolicited-pending   (false | true)  "false"
>


<!ELEMENT ice-cancellation      EMPTY >
<!ATTLIST ice-cancellation
          cancellation-id       CDATA           #REQUIRED
          subscription-id       CDATA           #REQUIRED
>


<!ELEMENT ice-catalog  ( ice-contact,
                         ( ice-offer-group | ice-offer )*
                       )
>
<!ATTLIST ice-catalog
          description           CDATA           #IMPLIED
          xml:lang              CDATA           #IMPLIED
          name                  CDATA           #IMPLIED
          url                   CDATA           #IMPLIED
>


<!ELEMENT ice-contact           (#PCDATA | ice-text)* >
<!ATTLIST ice-contact
          description           CDATA           #REQUIRED
          xml:lang              CDATA           #IMPLIED
          name                  CDATA           #REQUIRED
          url                   CDATA           #IMPLIED
>


<!ELEMENT ice-offer-group       (ice-offer-group+ | ice-offer+) >
<!ATTLIST ice-offer-group
          description           CDATA           #REQUIRED
>


<!-- ice-offer declared below -->


<!ENTITY % cm.events "ice-event-log" >


<!ELEMENT ice-events            (%cm.events;) >
<!ATTLIST ice-events
          format                CDATA           #REQUIRED
          start                 CDATA           #IMPLIED
          stop                  CDATA           #IMPLIED
          subscription-id       CDATA           #IMPLIED
>


<!ELEMENT ice-location          EMPTY >
<!ATTLIST ice-location
          target                CDATA           #REQUIRED
>


<!-- ice-offer is declared below. -->


<!-- ice-package is declared below. -->


<!ELEMENT ice-sequence          (ice-package-state*) >
<!ATTLIST ice-sequence
          subscription-id       CDATA           #REQUIRED
>


<!ELEMENT ice-status    (ice-contact, ice-subscription+) >


<![%extended.protocol;[


<!ELEMENT ice-extension-response %cm.extension-response; >


]]>




<!ELEMENT ice-subscription      (ice-offer) >
<!ATTLIST ice-subscription
          current-state         CDATA           #IMPLIED
          expiration-date       CDATA           #IMPLIED
          expiration-priority   (first | last)  #IMPLIED
          quantity-remaining    CDATA           #IMPLIED
          subscription-id       CDATA           #REQUIRED
>


<!-- ============================================================ -->
<!--           Declaration of ICE unsolicited messages.           -->
<!-- ============================================================ -->


<!ELEMENT ice-unsolicited-now   EMPTY >
<!ATTLIST ice-unsolicited-now
          request-id            CDATA           #REQUIRED
>


<!ELEMENT ice-unsolicited-request       (%syn.requests; |
                                         %com.requests;) >
<!ATTLIST ice-unsolicited-request
          unsolicited-request-id        CDATA   #REQUIRED
>


<!ELEMENT ice-unsolicited-response      (ice-code, (%com.responses;)?) >
<!ATTLIST ice-unsolicited-response
          unsolicited-response-id       CDATA   #REQUIRED
>


<!-- ============================================================ -->
<!--                    Declaration of ice-offer                  -->
<!-- ============================================================ -->


<!ELEMENT ice-offer ( ice-delivery-policy, ice-business-term* ) >
<!ATTLIST ice-offer
          offer-id              CDATA           #IMPLIED
          constraints-hash      CDATA           #IMPLIED
          constraints-hash-method CDATA         #IMPLIED
          constraints-url       CDATA           #IMPLIED
          description           CDATA           #REQUIRED
          expiration-date       CDATA           #IMPLIED
          product-name          CDATA           #IMPLIED
          subscription-id       CDATA           #IMPLIED
          atomic-use            (false | true)  "false"
          editable              (false | true)  "false"
          ip-status             CDATA           #IMPLIED
          rights-holder         CDATA           #IMPLIED
          show-credit           (true | false)  "false"
          usage-required        (true | false)  "false"
          type       (protocol | subscription)  "subscription"
>




<!ELEMENT ice-business-term     ( #PCDATA  |
                                  ice-text |
                                 ice-negotiable
                                )*
>
<!ATTLIST ice-business-term
          xml:lang              CDATA           #IMPLIED
          type                  ( credit    |
                                  licensing |
                                  payment   |
                                  reporting )   #REQUIRED
          url                   CDATA           #IMPLIED
          name                  CDATA           #IMPLIED
          id                    ID              #IMPLIED
>


<!ELEMENT ice-delivery-policy   (ice-delivery-rule+) >
<!ATTLIST ice-delivery-policy
          startdate             CDATA           #IMPLIED
          stopdate              CDATA           #IMPLIED
>




<!ELEMENT ice-delivery-rule     (ice-negotiable*) >






<!ATTLIST ice-delivery-rule
          mode                  (push | pull)   #REQUIRED
          monthday              NMTOKENS        #IMPLIED
          weekday               NMTOKENS        #IMPLIED
          startdate             CDATA           #IMPLIED
          starttime             CDATA           #IMPLIED
          stopdate              CDATA           #IMPLIED
          duration              CDATA           #IMPLIED
          min-update-interval   CDATA           #IMPLIED
          max-update-interval   CDATA           #IMPLIED
          min-num-updates       CDATA           #IMPLIED
          max-num-updates       CDATA           #IMPLIED
          url                   CDATA           #IMPLIED
          maxcount              CDATA           #IMPLIED
          maxfreq               CDATA           #IMPLIED
          mincount              CDATA           #IMPLIED
          minfreq               CDATA           #IMPLIED
>


<!-- ============================================================ -->
<!--                  Declaration of ice-negotiable               -->
<!-- ============================================================ -->


<!ELEMENT ice-negotiable     ( ice-text | ice-range )* >


<!-- The type attribute defined below MUST have ONE of the following
        values:
        ice-operation  - signals ice operational parameter.
        ice-extension  - signals extended parameter.
        x-- - where  is replaced
                         by an ice-processor's domain name.  negotiable
                         sets in this category are provided for private
                         use.
        ice- - All forms of category names prefixed with
                         ice, icE, iCe, iCE, Ice, ... are reserved for
                         future standardization.
        The following values are deprecated in ICE 1.1 and are
        included only for minor version interoperability.  Use
        the built-in ice-ranges instead.
        These parameter names mean that this ice-negotiable applies to
        their same-named counterpart in the containing ice-delivery-rule.


        duration -
        maxcount -
        max-num-updates -
        maxfreq -
        max-update-interval
        mincount -
        min-num-updates -
        minfreq -
        min-update-interval
        monthday -
        startdate -
        starttime -
        stopdate -
        weekday -


        The max and min attributes are deprecated in ICE 1.1 and are
        included only for minor version interoperability.  Use
        the built-in ice-ranges instead.


-->


<!ATTLIST ice-negotiable
          id                    ID              #IMPLIED
          type                  NMTOKEN         #REQUIRED
          max                   CDATA           #IMPLIED
          min                   CDATA           #IMPLIED
>




<!ELEMENT ice-range ( ice-text*,
                      ( ice-span | ice-enum )+
                    )
>




<!ATTLIST ice-range
          id                    ID              #IMPLIED
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
          order                 ( numeric     |
                                  lexical     |
                                  time        |
                                  enumeration
                                )               "numeric"
>


<!-- ============================================================ -->
<!--                    Declaration of ice-span                   -->
<!-- ============================================================ -->


<!ELEMENT ice-span   ( ice-default-value? ,
                       ice-span-min? ,
                       ice-span-max?
                    )
>
<!ATTLIST ice-span
          id                    ID              #IMPLIED
          ref                   IDREF           #IMPLIED
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
          status                ( required   |
                                  negotiable |
                                  accepted
                                )               "negotiable"
          order                 ( numeric     |
                                  lexical     |
                                  time        |
                                  enumeration
                                )               "numeric"
>


<!ELEMENT ice-default-value (#PCDATA) >
<!ATTLIST ice-default-value
          id                    ID              #IMPLIED
          ref                   IDREF           #IMPLIED
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
>


<!ELEMENT ice-default-none EMPTY >
<!ATTLIST ice-default-none
          id                    ID              #IMPLIED
          ref                   IDREF           #IMPLIED
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
>


<!ELEMENT ice-span-min ( #PCDATA | ice-limit )* >
<!ATTLIST ice-span-min
          id                    ID              #IMPLIED
          ref                   IDREF           #IMPLIED
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
>


<!ELEMENT ice-span-max ( #PCDATA | ice-limit )* >
<!ATTLIST ice-span-max
          id                    ID              #IMPLIED
          ref                   IDREF           #IMPLIED
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
>


<!-- ============================================================ -->
<!--                    Declaration of ice-enum                   -->
<!-- ============================================================ -->


<!ELEMENT ice-enum ( (ice-default-none | ice-default-value+), ice-enum-item+ ) >
<!ATTLIST ice-enum
          id                    ID              #IMPLIED
          ref                   IDREF           #IMPLIED
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
          select                CDATA           #REQUIRED
          status                ( required   |
                                  negotiable |
                                  accepted
                                )               "negotiable"
          order                 ( numeric     |
                                  lexical     |
                                  time        |
                                  enumeration
                                )               "numeric"
>


<!ELEMENT ice-enum-item ( #PCDATA   |
                          ice-extension |
                          ice-span
                        )*
>
<!ATTLIST ice-enum-item
          id                    ID              #IMPLIED
          ref                   IDREF           #IMPLIED
>


<!ELEMENT ice-extension EMPTY >
<!ATTLIST ice-extension
          id                    ID              #IMPLIED
          uuid                  CDATA           #REQUIRED
          name                  CDATA           #IMPLIED
>


<!-- ============================================================ -->
<!--                    Declaration of ice-package                -->
<!-- ============================================================ -->


<!ENTITY % cm.content           "ice-item-group | ice-item | ice-item-ref" >


<!ENTITY % cm.package           "((ice-item-remove+, (%cm.content;)*) |
                                 (%cm.content;)+)" >


<!ENTITY % attlist.item "
          activation            CDATA           #IMPLIED
          expiration            CDATA           #IMPLIED
          content-filename      CDATA           #IMPLIED
          content-transfer-encoding   (base64 | x-native-xml)
                                               'x-native-xml'
          content-type          CDATA          'application/octet-stream'
          ip-status             CDATA           #IMPLIED
          xml:lang              CDATA           #IMPLIED
          license               CDATA           #IMPLIED
          rights-holder         CDATA           #IMPLIED
          show-credit           CDATA           #IMPLIED
          subscription-element  CDATA           #IMPLIED
">


<!ENTITY % attlist.item-type "
          ice-element         ( ice-item       |
                                ice-item-group |
                                ice-item-ref   |
                                ice-item-remove
                              )                 'ice-item'"
>




<!ELEMENT ice-package         (%cm.package;)   >
<!ATTLIST ice-package
          activation            CDATA           #IMPLIED
          atomic-use            (false | true)  "false"
          confirmation          (false | true)  "false"
          editable              (false | true)  "false"
          exclusion             CDATA           #IMPLIED
          expiration            CDATA           #IMPLIED
          fullupdate            (false | true)  "false"
          xml:lang              CDATA           #IMPLIED
          new-state             CDATA           #REQUIRED
          old-state             CDATA           #REQUIRED
          package-id            CDATA           #REQUIRED
          show-credit           CDATA           #IMPLIED
          subscription-id       CDATA           #REQUIRED


          ip-status             CDATA           #IMPLIED
          license               CDATA           #IMPLIED
          item-repair           (false | true)  "false"
          rights-holder         CDATA           #IMPLIED
>


<!ELEMENT ice-item-remove       EMPTY >
<!ATTLIST ice-item-remove
          subscription-element  CDATA           #REQUIRED
          ice-element           CDATA   #FIXED 'ice-item-remove'
          name                  CDATA           #IMPLIED
>


<!ELEMENT ice-item-group        ((%cm.package;)+) >
<!ATTLIST ice-item-group        %attlist.item;
          ice-element           CDATA   #FIXED 'ice-item-group'
          name                  CDATA           #IMPLIED
          item-group-id         CDATA           #REQUIRED
>


<!ENTITY % cm.item              "#PCDATA" >


<!ELEMENT ice-item              (%cm.item;) >


<!ATTLIST ice-item              %attlist.item;
          ice-element           CDATA   #FIXED 'ice-item'
          name                  CDATA           #REQUIRED
          item-id               CDATA           #REQUIRED
>


<!ENTITY % cm.access            "( ice-access-window?,
                                   ice-access-control?
                                 )" >


<!ELEMENT ice-access %cm.access; >
<!ATTLIST ice-access
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
          id                    ID              #IMPLIED
>


<!ENTITY % cm.item-ref "(ice-access)*" >


<!ELEMENT ice-item-ref         %cm.item-ref;             >
<!ATTLIST ice-item-ref         %attlist.item;
          url                   CDATA  #REQUIRED
          ice-element           CDATA  #FIXED 'ice-item-ref'
>


<!ENTITY % cm.access-control "(#PCDATA)" >


<!ELEMENT ice-access-control %cm.access-control; >
<!ATTLIST ice-access-control
          id                    ID              #IMPLIED
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
          control-type          ( password  |
                                  cookie    |
                                  custom    )   #REQUIRED
          user                  CDATA           #IMPLIED
          password              CDATA           #IMPLIED
          access-reference      CDATA           #IMPLIED
          extension-id          CDATA           #IMPLIED
>


<!ENTITY % cm.access-window "(ice-delivery-policy)" >


<!ELEMENT ice-access-window %cm.access-window; >
<!ATTLIST ice-access-window
          id                    ID              #IMPLIED
          name                  CDATA           #IMPLIED
          description           CDATA           #IMPLIED
          starttime             CDATA           #IMPLIED
          stoptime              CDATA           #IMPLIED
>




<!-- ============================================================ -->
<!--              Declaration of default ice-event-log            -->
<!-- ============================================================ -->


<!ELEMENT ice-event-log         ((ice-event-msg | ice-event-info)*) >
<!ATTLIST ice-event-log
          version               CDATA           #REQUIRED
>


<!ELEMENT ice-event-msg         (ice-code?, ice-event-data?) >
<!ATTLIST ice-event-msg
          other-id              CDATA           #IMPLIED
          request               CDATA           #REQUIRED
          request-id            CDATA           #REQUIRED
          request-start         CDATA           #REQUIRED
          request-type          CDATA           #IMPLIED
          response              CDATA           #REQUIRED
          response-id           CDATA           #IMPLIED
          response-stop         CDATA           #REQUIRED
          response-type         CDATA           #IMPLIED
          role                  (requestor | responder)
                                                #REQUIRED
          subscription-id       CDATA           #IMPLIED
>


<!ELEMENT ice-event-info        (ice-event-data?) >
<!ATTLIST ice-event-info
          event                 CDATA           #REQUIRED
          event-start           CDATA           #REQUIRED
          event-stop            CDATA           #REQUIRED
>


<!ELEMENT ice-event-data        ANY >


<!-- ============================================================ -->
<!--             End of ICE 1.1 Document Type Definition          -->
<!-- ============================================================ -->