Citation:
File Checks source data sets and determines if they are different. This is
the simplest and fastest method with the least amount of processing
overhead. It produces a 32 bit hashsum for each DS/member processed.
Line Compares source data sets at the line level for differences.
Reformatted lines (that is, lines with blanks inserted or deleted) are
automatically detected for lines <= 256 characters. Line compare is the
most frequently used level of compare and is the compare type default.
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