In WatuPRO all export files are TAB (tabulator) delimited CSV files. The reason we use this format is because comma delimited files are more error prone when the data contains rich text, HTML, commas, quotes etc. Tabulator is a lot more reliable as delimiter when importing and exporting data.
If you use Microsoft Excel here are a couple of links that will help you:
Here at Kiboko Labs we prefer to use Libre Office Calc. It’s free and has versions for Mac, Windows, and Linux. When you double-click a .csv named file it automatically suggests the proper delimiter. Just select UTF-8 (Unicode) as encoding, if this is not already selected and open the file. Much easier.