The following parameters are found in the fetchcomponents_by_* commands, and the fetchevents_by_id and fetchtodos_by_id commands:
compressed– A boolean specifying whether to return all of the recurring entry’s data, or to exclude the following parameters:rrules, rdates, exrules, exdates.
This parameter is deprecated in the current release, and is included only for backwards compatibility. It might be removed from future releases.
recurring– A boolean parameter specifying whether or not to return all components in compressed form (master entry and exceptions). This parameter is also present in the fetch_deletedcomponents command.