How to Write Sort Logic in COBOL – Here’s Best Example

The following syntax of sort has some hidden meanings. Just I would like to share those:

Sort Filename-1 On Ascending/Descending key dataname-1
With Duplicates in Order
Using filename-2
Giving filename-3

COBOL Sort Key Points

Here, all the files opened and closed automatically. No need to open/write explicitly.
All these files can be sequential/Relative/Indexed
We need to use “With Duplicates in order” if we want to keep duplicates in the same sequence
In Using and Giving we can give multiple files
We can give both Ascending and Descending Keys at a time