The document discusses the importance of clear arm signals from corner takers to indicate the corner strategy to teammates. It provides 4 examples of arm signals: 1) hands up to indicate a long ball to the penalty spot, 2) pointing to the feet to signal a flick to the front post, 3) hands on hips to confuse the defense with a short corner played front post, and 4) arms pointing out to cue a short corner played to the fullback on that side of the pitch. Coaches will address corner takers if signals are not clearly visible to all players.