This deletes an entire component, instance, or individual items. Deletes in a roll up structure format – will delete the parent if no children exist any longer (therefore it can end up deleteing subsurveys and collections.
This makes any and all changes to existing information (dataset and item levels) for the instance specified ONLY. (Note: some dataset level information is not instance-specific.)
All changes that are related to time are made through this. E.g.: discontinuing all items, discontinuing/continuing specific items, and redefining items (break in series).