+ (** @param fname file from which load new configuration. If it's an absolute
+ * file name "path" argument is ignored.
+ * Otherwise given file name is looked up in each directory member of the
+ * given path. Each matching file is loaded overriding previous settings. If
+ * no path is given a default path composed of just the current working
+ * directory is used.
+ *)
+val load_from: ?path:string list -> string -> unit
+
+(** {2 OO interface} *)
+
+ (** @see load_from *)
+class registry: ?path: string list -> string ->
+ object
+ method get: string -> string
+ method set: key:string -> value:string -> unit
+ method has: string -> bool
+ method unset: string -> unit
+ method fold: ?prefix:string -> ('a -> string -> string -> 'a) -> 'a -> 'a
+ method iter: ?prefix:string -> (string -> string -> unit) -> unit
+ method to_list: ?prefix:string -> unit -> (string * string) list
+ method ls: string -> string list * string list
+ method get_string: string -> string
+ method get_int: string -> int
+ method get_float: string -> float
+ method get_bool: string -> bool
+ method get_string_list: string -> string list
+ method set_string: key:string -> value:string -> unit
+ method set_int: key:string -> value:int -> unit
+ method set_float: key:string -> value:float -> unit
+ method set_bool: key:string -> value:bool -> unit
+ method set_string_list: key:string -> value:string list -> unit
+ method get_opt:
+ (string -> 'a) (* getter *) ->
+ string -> 'a option
+ method set_opt:
+ (key:string -> value:'a -> unit) (* setter *) ->
+ key:string -> value:'a option -> unit
+ method get_opt_default:
+ (string -> 'a) (* getter *) ->
+ 'a -> string -> 'a
+ method save_to: string -> unit
+ end