Lotus Improv - the spreadsheet that allowed you to use formulas that could be defined like, "Profit = Income - Expenses," and didn't need to be specified in ter

Lotus Improv - the spreadsheet that allowed you to use formulas that could be defined like, "Profit = Income - Expenses," and didn't need to be specified in terms of cell references. You could also drag and drop rows and columns around easily. It was once described as "the first spreadsheet program good enough to be worth criticizing."