DITA ID Attributes Specifications

1. Serna document template section with DITA ID specifications

   <id-scope-defs>
     <id-scope-def>
       <pattern>*[@class="- topic/topic "]</pattern>
       <attr-name>id</attr-name>
       <id-def>
         <pattern>*</pattern>
         <attr-name>id</attr-name>
       </id-def>
     </id-scope-def>
   </id-scope-defs>

2. List of DITA ID scope definitions

   <id-scope-defs>
     <!-- Content: (id-scope-def*) --> 
   </id-scope-defs>

   1. id-scope-defs - the list of DITA ID scope definitions.

   2. id-scope-def - DITA ID scope definition (optional).

3. DITA ID scope definition

   <id-scope-def>
     <!-- Content: ( pattern, 
                     attr-name, 
                     id-def*,
                     idref-def* 
                    ) -->
   </id-scope-def>

   Definition of the DITA ID uniqueness scope:

   1. pattern - XSLT pattern specifies the scoping element - element in the scope of which DITA ID attributes must be unique (required).

   2. attr-name - QName specifies the name of the DITA ID attribute of the scoping element (required).

   3. id-def - DITA ID definition (optional).

   4. idref-def - IDREF definition (optional).

4. DITA ID definition

   <id-def>
     <!-- Content: ( pattern, 
                     attr-name ) -->
   </id-def>

   Definition of the DITA ID attribute and its element:

   1. pattern - XSLT pattern specifies the element which may have the DITA ID attribute (required).

   2. attr-name - QName specifies the name of the DITA ID attribute of the above-mentioned element (required).

5. IDREF definition

   <idref-def>
     <!-- Content: ( pattern, 
                     attr-name ) -->
   </idref-def>

   Definition of the IDREF attribute and its element:

   1. pattern - XSLT pattern specifies the element which may have the IDREF attribute (required).

   2. attr-name - QName specifies the name of the IDREF attribute of the above-mentioned element (required).

   idref-def is used to validate references to elements with DITA IDs.

<t:id-scope-defs>
  <t:id-scope-def>
    <t:pattern>*[contains(@class, ' topic/topic ') or
                 contains(@class, ' map/map ')]</t:pattern>
    <t:attr-name>id</t:attr-name>
    <t:id-def>
      <t:pattern>*</t:pattern>
      <t:attr-name>id</t:attr-name>
    </t:id-def>
    <t:idref-def>
      <t:pattern>*[contains(@class, ' topic/xref ') 
        or contains(@class, ' topic/link ')]</t:pattern>
      <t:attr-name>href</t:attr-name>
    </t:idref-def>
    <t:idref-def>
      <t:pattern>*[@conref != '']</t:pattern>
      <t:attr-name>conref</t:attr-name>
    </t:idref-def>
  </t:id-scope-def>
</t:id-scope-defs>