4.2 The Marker (WSF Rules of Squash, Rule 16)

The Marker calls the score and announces decisions. Specific duties include: Calling "Fault," "Foot fault," "Not up," "Down," or "Out" for incorrect play; Repeating the Referee's decisions and calling the score after each rally; Calling "Hand out" to indicate a change of service

Send this to your friend — argument over.