Structural module coding requirements
A structural type module must conform to the following coding requirements in addition to the general module coding requirements:
Default included domains entity
The module must define the
included-domains entity with a
default value, as in the following
<!ENTITY included-domains "">
A document type shell can predefine the
included-domains entity to list
domains to be added to the document type.
Structural vocabulary modules may require the use of specific domains. In that case,
default value of the
included-domains entity must include the appropriate
domain use declaration, for
<!ENTITY included-domains "(topic myDomain)">
The list of included domains must declare the domains from most generic (on the left) to most specialized, current domain (on the right). See Domain usage declaration (the @domains attribute).
Topic and map element attributes
The topic or map element type must set the @DITAArchVersion attribute to the DITAArchVersion entity and the @domains attribute to the included-domains entity. These attributes give processors a reliable way to check the architecture version and look up the list of domains available in the document type.
<!ATTLIST concept %concept.attributes; %arch-atts; domains CDATA "&included-domains;" >