The new Display System Replacement (DSR) being implemented in air route traffic control centers (ARTCCs) will allow the data-side controller less room to post Flight Progress Strips (FPSs). We tested a new FPS marking and posting procedure designed to reduce the controller's need for, or reliance on, the FPS. The experiment was conducted at Cleveland (ZOB) and Jacksonville (ZJX) ARTCCs utilizing individual controllers and controller teams operating in either high- or low-altitude sectors. Each controller ran two, 30-minute scenarios. Scenarios were counterbalanced, but sample sizes did not allow counterbalancing of conditions. In the Normal scenario, controllers worked as they normally would.