.SUBTRACTED FILE: PIC002
[Enter the name of the file to be subtracted from the
first file. Can be same as the first input file.]
.OUTPUT FILE: PIC999
[Enter the name of the output file. Can be same as
either input file.]
[PIC002 is subtracted from PIC001, and the result is kept in PIC999. PIC003 is then subtracted from the new PIC001, and the result is again put into PIC999.]
NOTES