Module Layout.Overlay

val pretty : ?title:( Stdlib.Format.formatter -> unit ) -> 'a Frama_c_kernel.Pretty_utils.formatter -> 'a overlay Frama_c_kernel.Pretty_utils.formatter
val merge : 'a Frama_c_kernel.Pretty_utils.formatter -> 'a merger -> 'a overlay -> 'a overlay -> 'a overlay
val once : 'a -> 'a overlay -> bool