val patch_dtd : ?via_http:bool -> unit -> string -> string
(* TODO via_http not yet supported for patch_xsl *)
val patch_xsl : ?via_http:bool -> unit -> string -> string
val patch_dtd : ?via_http:bool -> unit -> string -> string
(* TODO via_http not yet supported for patch_xsl *)
val patch_xsl : ?via_http:bool -> unit -> string -> string