@nixCraft Rather than vigorously arguing that your thirteen sheet Excel workbook is not "software" from the perspective of our software quality assurance program, perhaps your effort would be better spent migrating your data into an actual database which can be shared safely, documented, tested, and audited? - signed, safety analyst & SQA person who is very tired of being dragged into these meetings over and over again about the problems caused by a critical piece of our analysis infrastructure being written in Excel.