+
+val box: int -> unit
+
+val unbox: int -> unit
+
+val flush: int -> unit
+
+val box_err: unit -> unit
+
+val flush_err: unit -> unit
+
+val log: ('a, 'b) specs -> int -> ('a, 'b) message -> unit
+
+val error: ('a, 'b) specs -> ('a, 'b) message -> unit
+
+val items1: string -> ('a, 'b) message
+
+val t_items1: string -> 'a -> 'b -> ('a, 'b) message
+
+val et_items1:
+ string -> 'a -> string -> 'b -> ('a, 'b) message
+
+val et_items2:
+ string -> 'a -> string -> 'b ->
+ ?sc2:string -> ?c2:'a -> string -> 'b ->
+ ('a, 'b) message
+
+val et_items3:
+ string -> 'a -> string -> 'b ->
+ ?sc2:string -> ?c2:'a -> string -> 'b ->
+ ?sc3:string -> ?c3:'a -> string -> 'b ->
+ ('a, 'b) message