Using handler sets allows to group and reuse handlers in different contexts. In order to achieve this goal the YAML way, one or more handlers are grouped into a list of handlers, that is a handler set.

Example:

handlerSets:
  text: &text_handlers
    - !Handler
      eventMatcher:  !Matcher {qname: *em}
      outputHandler: !ElementWriter {writeElement: true, writeCharacters: true }
    - !Handler
      eventMatcher:  !Matcher {qname: *strong}
      outputHandler: !ElementWriter {writeElement: true, writeCharacters: true }
    

Example: reuse '*text_handlers' for a named context

      contexts:
        - !Context
          name: headline
          defaultHandler:
            !Handler
            outputHandler: !ElementWriter {writeCharacters: true}
          handlers:
            - *text_handlers
      ...