anchor.diff:  ! ANFANG UNTERPROGRAMM
     
         SUBROUTINE POSFRA(A,IA1,IA2,CDEL,NA,LA,IA)
  -      USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : OUTPUT_UNIT, ERROR_UNIT
  +      USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : ERROR_UNIT
         IMPLICIT DOUBLE PRECISION (A-H,O-Z)
   !     ******************************************
   !
  
positive.code: ! ANFANG UNTERPROGRAMM
    
        SUBROUTINE VNAM(IA, IN, A,NA,LA, ITA, ISCRTY)
        USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : OUTPUT_UNIT, ERROR_UNIT
        IMPLICIT DOUBLE PRECISION (A-H,O-Z)
  !     *********************************************
  !
  
negative.code: ! ANFANG UNTERPROGRAMM
    
        SUBROUTINE ARIFOR(IARI1,IARI2,IU)
        USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : ERROR_UNIT
        IMPLICIT DOUBLE PRECISION (A-H,O-Z)
  !     **********************************
  !
  