Module fields 

Reading a record document’s own fields, failing closed: a field present in another shape, or written by concurrent changes that disagree, reads as invalid rather than absent. Two devices writing the same value without having seen each other’s change agree, and read as that value. The toolkit’s record store (ui::record) and this crate’s record readers share these.

Constants

META

Key, in a record’s own document, of the map holding its identity.