This data item contains the data to be justified.
This optional parameter contains one of three literal values:
If this parameter is omitted, then "R" is implied.
This routine removes all leading and trailing spaces from DATA-ITEM and justifies the remaining data as indicated by JUSTIFY-TYPE. The resulting string is returned in DATA-ITEM. If centering is chosen, there will be one more space on the right than on the left if an odd number of spaces is used.