module MMap:sig
..end
type
t
val empty : t
val add : Construction.Compute.lettre list ->
Construction.Compute.Rel.t ->
t -> t
val find : Construction.Compute.lettre list ->
t -> Construction.Compute.Rel.t
val choose : t ->
Construction.Compute.lettre list * Construction.Compute.Rel.t
val filter : (Construction.Compute.lettre list -> Construction.Compute.Rel.t -> bool) ->
t -> t