# S shore clamp (the tile-stepped lane): hold S for 400 frames from the
# spawn. The walker crosses the deck and stops at the far (row 5) edge -
# the water past it is impassable, so y never reaches 684 (tile (4,5))
# and the position oscillates within a frame-step of the edge as the
# clamp keeps reverting the restart.
10 keydown s
410 keyup s
# frames: 500
