The last button Menu allows user to return into previous menu Change mode. Simulation control layout 3.3.2 Boat in scene movement control and environment setting In part Setup of scene user can set movement trajectory of both boats. The trajectory setting is displayed in preview. Blue and red lines determine ship s 1 and ship s 2 trajectories. The trajectory length is computed as a product of speed of given ships and total time of scene.
Green circle represents distance of ship.
Finally user can select on which boat be found yourself. For it serves switch Observer is on . These parameters are displayed in preview too. The buttons Cancel , Ok and Use has the same function as Windows standard. Boat in scene movement control and environment setting layout 3.4 Question and answer system Questions and answer texts are stored in the external file.