Relational attributes (<%rel-atts;>) is a parameter entity declaration in the topic DTD that includes attributes whose values may be used for representing navigational relationships. These attributes occur only on elements that represent relationships between topics.
|Name||Description||Data Type||Default Value||Required?|
|type||Describes the target of a cross-reference. See The type attribute for detailed information on supported values and processing implications.||CDATA||#IMPLIED (Processed as if the target were of type "topic", or inherited from an ancestor)||No|
|role||The role attribute defines the role the target topic plays in relationship with the current topic. For example, in a parent/child relationship, the role would be "parent" when the target is the parent of the current topic, and "child" when the target is the child of the current topic. This structure could be used to sort and classify links at display time. See The role attribute for information on supported values.||(parent | child | sibling | friend | next | previous | cousin | ancestor | descendant | sample | external | [deprecated] other | -dita-use-conref-target)||#IMPLIED||No|
|otherrole||Indicates an alternate role. This value is used when the role attribute is set to other.||CDATA||#IMPLIED||No|
The %rel-atts; parameter entity is used within the DITA DTDs as a common definition for attributes available to elements that represent topic-to-topic relationships. Some typical examples include:
<link type="task" role="child" href="how2uninst.dita" scope="local"/>
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OASIS DITA Version 1.1 Language Specification -- OASIS Standard, 1 August 2007
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