See appendix for information about this element in OASIS document type shells.
- map/topicref subjectScheme/hasNarrower
This example specifies that Planting Roses is a narrower subject category than Horticulture, although it is part of the Horticulture subject area.
<subjectScheme> <hasNarrower> <subjectdef keys="horticulture" navtitle="Horticulture"> <subjectdef keys="plantrose" navtitle="Planting Roses"/> </subjectdef> </hasNarrower> </subjectScheme>
The following attributes are available on this element: Universal attribute group, Link relationship attribute group (with a narrowed definition of @href, given below), @processing-role from Attributes common to many map elements, @navtitle from Topicref element attributes group, @outputclass, @keys, and @keyref.
- A pointer to the resource represented by the <topicref>. See The @href attribute for detailed information on supported values and processing implications. References to DITA content cannot be below the topic level: that is, you cannot reference individual elements inside a topic. References to content other than DITA topics should use the @format attribute to identify the kind of resource being referenced.