Some concepts have more than one term. For example, in Apache Qpid "Consume" and "Acquire" are used synonymously, as are "Sender Capacity" and "Sender Replay Buffer Size". In order to generate a meaningful SKOS vocabulary that can automatically link concepts to their occurrences, the index needs to build with the synonymous terms. So - can we support this? It would need a means of storing the synonyms in Skynet, and perhaps inject them into the Docbook topic using an appropriate tag. And it would need to be available as a property in exports and via the REST interface.