COBOL Manual for TNS/E Programs (H06.08+, J06.03+)

merge-file
is a sort-merge file description (SD) name. merge-file can have variable-length or fixed-length
records. Its record description entry defines the data item or items used as the key or keys.
key-specifier
ASCENDING
specifies ascending merge order.
DESCENDING
specifies descending merge order.
key
is a data item to be used as a merge key. If merge-file has variable-length records,
key must refer to data within the first x character positions of the record, where x is the
minimum record size for merge-file.
COLLATING SEQUENCE phrase
specifies a collating sequence for sorting.
alphabet-name
must be associated with a collating sequence in the SPECIAL-NAMES paragraph of the
Environment Division (see SPECIAL-NAMES Paragraph).
USING phrase
MERGE 361