Related links trigger reciprocal or nonreciprocal links between documents which have the following formats:
- DITA books.
- DITA articles.
- FTML articles.
- Author-it books.
- Unstructured documents.
For a group of related documents that are all structured, the links are reciprocal as follows:
For a group of related documents containing one or more that are unstructured, the links between the structured and unstructured document(s) are nonreciprocal as follows:
Unstructured documents cannot link to other documents through Related links.