<!ELEMENT schema  (#PCDATA )>
<!ATTLIST schema  e-dtype NMTOKEN  #FIXED 'string' >
<!ELEMENT schemaversion  (#PCDATA )>
<!ATTLIST schemaversion  e-dtype NMTOKEN  #FIXED 'string' >
<!ELEMENT title  (#PCDATA )>
<!ATTLIST title  e-dtype NMTOKEN  #FIXED 'string' >
<!ELEMENT file  (metadata? )>
<!ATTLIST file  href CDATA  #REQUIRED >
<!ELEMENT dependency EMPTY>
<!ATTLIST dependency  identifierref CDATA  #IMPLIED >
<!ELEMENT resource  (metadata? , file+ , dependency* )>
<!ATTLIST resource  identifier ID     #REQUIRED
                    type       CDATA  #REQUIRED
                    href       CDATA  #IMPLIED >
<!ELEMENT resources  (resource* )*>

<!ELEMENT item  (title? , item* , metadata? )*>
<!ATTLIST item  identifier    ID        #REQUIRED
                isvisible     CDATA     #IMPLIED
                parameters    CDATA     #IMPLIED
                identifierref CDATA     #IMPLIED
                a-dtype       NMTOKENS  'isvisible boolean' >
<!ELEMENT organization  (title? , item* , metadata? )>
<!ATTLIST organization  identifier ID  #REQUIRED >
<!ELEMENT organizations  (organization* )>
<!ATTLIST organizations  default IDREF  #IMPLIED >
<!ELEMENT metadata  (schema? , schemaversion? )>

<!ELEMENT manifest  (metadata? , organizations , resources , manifest* )>
<!ATTLIST manifest  identifier ID     #REQUIRED
                    version    CDATA  #IMPLIED >