add track (2147483647,0) -> (0,0) add track (0,0) -> (-2147483648,0) list tracks create engine electrical T3 Marie 1 false true add train 1 T3-Marie put train 1 at (0,0) in direction 0,-1 put train 1 at (0,0) in direction -1,0 step 1000 delete train 1 add train 1 T3-Marie put train 1 at (2147483637,0) in direction 1,0 step 10 step 1 exit