/PARALLEL[=n]
Lists the records with differences side by side. The value of
the parameter n specifies the number of matched records to merge
after each unmatched record; it must be a non-negative decimal
number less than or equal to the number specified in the /MATCH
qualifier.
By default, the DIFFERENCES command does not list records after
each list of unmatched records. Also by default, the DIFFERENCES
command creates only a list of merged differences.