RelationPriv.WMay written variables.
include module type of struct include CommonPriv.MayVars endinclude sig ... endval hash : t -> intval show : t -> stringval pretty : unit -> t -> Printable.Pretty.docval printXml : 'a BatInnerIO.output -> t -> unitval to_yojson : t -> Yojson.Safe.tval tag : t -> intval arbitrary : unit -> t QCheck.arbitraryval bot : unit -> tval is_bot : t -> boolval top : unit -> tval is_top : t -> booltype elt = Basetype.Variables.tval empty : unit -> tval is_empty : t -> boolval cardinal : t -> int