That the code must be covered from the test suite. In the case of the previous employer, it was easy because the product was an API, and the existing suite was used to create a map of what needed to be tested. I described the gcc based tools that were used to conduct it. I also described that the test suite was written under Linux but was executed both under Windows and the Macintosh. While the customers were still using PowerPCs, Macintoshes using that technology were also used.