<toc>
The <toc> element indicates to the processing software that the
         author wants a table of contents generated at the particular location. If no
         @href attribute is specified on the <toc> element, an
         external processor might generate a table of contents at this
         location. If the @href attribute references a topic or map, that topic or map
         contains a manually created table of contents.
      
      Content models
See appendix for information about this element in OASIS document type shells.
Inheritance
- map/topicref bookmap/toc
Example
See the example in <bookmap>.
Attributes
The following attributes are available on this element: Universal attribute group, Link relationship attribute group (with a narrowed definition of @href, given below), Attributes common to many map elements, @navtitle and @copy-to from Topicref element attributes group, @outputclass, and @keyref.
- @href
 - References a manual listing for the current
                        element. See The @href attribute for detailed information on supported values
                        and processing implications. If no
                        @href is specified, processors can choose to generate
                        an appropriate listing for this element. All of
                        the book listings operate in a similar manner; for
                        example, 
<toc href="toc.dita"/>references a topic which contains a manual table of contents, while<toc/>indicates that a processor should generate the table of contents.