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Exterminating Bugs in Spreadsheets and Web Applications

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Spreadsheet cell borders

The 'What You See is What You Test' (WYSIWYT) testing approach. Spreadsheet cell borders reflect the 'testedness' of cells. Users indicate 'testing decisions' by placing checkmarks.

Credit: Eugene Creswick, Joe Ruthruff, Margaret Burnett and Gregg Rothermel, Oregon State University