RSEP is the ascii record separator non-printable character.

TRUE and FALSE are used in constructing keys from booleans.

USEP is the ascii unit separator non-printable character.

Both implements Collection by writing to both and comparing reads.

Integer key element.

ObjectId key element, because aaargh of course casting it to a string fucks it up, even though bson.ObjectId is just a string type.

String key element.

Boolean key element.

A value that is stored directly at K{{"_id", ObjectId}} in the _vals bucket, with pointers for each Key in _idxs.

A value that is stored directly at Key in BoltDB.