C
C     FILENAMES:
      CHARACTER*80 FILE2
C
C     LOGICAL UNIT NUMBERS:
      INTEGER LU2
      PARAMETER (LU2=2)
C
C     ARRAY DIMENSIONS:
      INTEGER MLE,MH,MSPINE
      PARAMETER (MLE=600,MH=MLE**2+1,MSPINE=MLE*(MLE+1)/2)
C
      INTEGER ISP1(MSPINE),ISP2(MSPINE),ISP3(MSPINE)
C
C.......................................................................
C
      NH=100
      FILE2='NET.FS'
      WRITE(*,'(A)')
     *'+ENTER MAXIMUM F.S. SIZE (100), AND F.S. FILENAME (''NET.FS''): '
      READ(*,*) NH,FILE2
      IF(NH.GT.MH) THEN
        STOP 'ERROR: TOO LARGE FORWARD STAR.'
      END IF
      OPEN(LU2,FILE=FILE2)
C
      NSPINE=0
      DO 69 I1=1,NH
        DO 58 I2=0,I1
          DO 57 I3=0,0
            DO 10 J=2,I1
              IF(MOD(I1,J).EQ.0.AND.MOD(I2,J).EQ.0
     *                         .AND.MOD(I3,J).EQ.0) THEN
                GO TO 56
              END IF
   10       CONTINUE
C
C           NEW SPINE
            NSPINE=NSPINE+1
            IF(NSPINE.GT.MSPINE) THEN
              STOP 'ERROR: TOO MANY SPINES.'
            END IF
            ISP1(NSPINE)=I3
            ISP2(NSPINE)=I2
            ISP3(NSPINE)=I1
C
   56       CONTINUE
   57     CONTINUE
   58   CONTINUE
C
        WRITE(*,'(A,I7,2I8)') '+',I1,NSPINE
        WRITE(LU2,'(I3,I6,I7,E13.6)') I1,NSPINE
        WRITE(LU2,'(8(3I3,1X))') (ISP1(I),ISP2(I),ISP3(I),I=1,NSPINE)
   69 CONTINUE
      WRITE(LU2,'(I3,I6,I7,E13.6)') 0,0
C
      STOP
      END
C
C=======================================================================
C