A Data Window is a table from a spreadsheet or similar database file. WinTD only allows very limited manipulations of these at this time. You cannot create a blank Data Window using WinTD - you need to create the file first, then use Data-Open Data Table.
At this time, Data Windows are used to provide data on money prizes, to compute cumulative points over a number of tournaments or to manage the list of recipients for e-mailing or texting pairings.
Operations permitted: Print, Export, Copy (no Paste)