This group holds a series of attributes to support the exchange of information with the web (and via that the iPhone/iPad) using Simplenote, DEVONThink, Evernote, Apple Notes, and Finder folders. In older versions, this group was called 'Simplenote' but was renamed to better reflect its scope of use.
This group also contains 12 hidden Scrivener-related attributes which are needed for under-the-hood synch requirements. Their exact roles are not documented and should not be of concern to most users. In TBX source XML they can be identified by the code string visibleInEditor="0".