Terms.Relationtype (!'a, !'b) t = ('a, 'b) Terms.Relations.Equality.tval pretty : Format.formatter -> ('a, 'b) t -> unitval pretty_with_terms :
(Format.formatter -> 'tl -> unit) ->
'tl ->
(Format.formatter -> 'tr -> unit) ->
'tr ->
Format.formatter ->
('a, 'b) t ->
unitval identity : ('a, 'a) t