If the user chose to press C, Windows would continue to run on DR DOS without problems. While it had been already speculated in the industry that the purpose of this code was to create doubts about DR DOS's compatibility and thereby destroy the product's reputation,[13][14] internal Microsoft memos published as part of the United States v. Microsoft antitrust case later revealed that the specific focus of these tests was in fact DR DOS.[15] At one point, Microsoft CEO Bill Gates sent a memo to a number of employees, reading