View generation options not in official docs

The information at http://wiki.apache.org/couchdb/HTTP_view_API#View_Generation_Options should be in http://docs.couchdb.org/en/latest/ddocs.html

Related random questions:

• wasn't there also a collation option? or is that a server config thing?
• what is _local_seq anyway? Is that the db.update_seq (before|after) that doc._rev was written?