LBR$_ILLINROU Input routine improperly specified or omitted. LBR$_ILLOUTROU Output routine improperly specified or omitted. LBR$_NOHLPLIS Error. No default help libraries can be opened. LBR$_TOOMNYARG Error. Too many arguments were specified. LBR$_USRINPERR Error. An error status was returned by the user-supplied input routine.