@DrBill: Thanks. For bonus credit does the 2 byte CRLF .csv have zero cells or one empty cell? The CRLF is optional at the end of a .csv so it would appear that even the zero-cell .csv could have one but I am not so sure.
@XOIIO: It is for any data you want to organize in rows and columns. You can read and edit the data in a text editor. Spreadsheets, database tables, logs, etc. are commonly exportable to .csv