Util.Messagescreate a new message handle with label t . * Printing is disabled per default
val eprintf : ?raw:bool -> t -> ('a, unit, string, unit) Stdlib.format4 -> 'aPrint the message on stderr if the Util module has been * set to verbose using the function make_verbose and * either the handle t is enable or all handles were enabled with * the function all_enabled
val enable : label -> unitenable l the handle with label l
val disable : label -> unitdisable l the handle with label l
val avalaible : unit -> label listreturn the list of all labels known to the module
val is_enabled : label -> bool