Issue link: http://itf.uberflip.com/i/447398
26 (j) Decide whether or not a match shall be begun or stopped owing to the state of the courts, the state of the weather, darkness, or other unavoidable hindrance, and, having been postponed or stopped, whether play shall begin or continue. (k) During the course of a Tie decide whether or not a match can be transferred indoors and/or to another surface in case of bad weather. (l) Impose or instruct a Chair Umpire to enforce the Code of Conduct should any disturbance or interference by spectators or others occur, or should any other activities around the court disturb the players. (m)Ensure that all members of the team, including the Captain, comply with the section of the Davis Cup Code dealing with dress and equipment, including Team Identification. (n) Ensure that when substitutions are sanctioned for reasons of health, a medical certificate from an independent doctor is presented. (o) Change the decision of a Line Umpire or Chair Umpire, or order a point to be replayed, when a very clearly incorrect call or decision has been made relating to a Question of Fact. However, the Referee only has this authority when there is a non-neutral Chair Umpire officiating the match and the Referee is sitting on court. Note: The Referee should always remember that the intention is to give him power to correct very clear mistakes and not to become a second Chair Umpire. (p) Immediately on the completion of the Tie, submit a Referee's Report to the ITF for distribution to the two Associations concerned. (q) Ensure, in addition to on court officials, that only the nominated team as per Regulation 36 shall be present for the presentation and closing ceremony on court. 45. REFEREE - POWERS (a) The Referee is the on-site representative of the ITF, and is responsible for ensuring the uniform administration and interpretation of the Davis Cup Regulations, the Rules of Tennis, the operations manual, the Davis Cup Code of Conduct and the ITF duties and procedures for Officials. (b) The Referee shall have the power to give a formal warning to the Captain and, after two warnings, may remove him from the match in course and/or for the following matches of that Tie, in which case he may be replaced only by a member of the nominated team. The Referee may also remove the Captain without a formal warning for a single incident of misconduct. The Captain shall be allowed to sit on the court beside the chair of his team but he may not move away from that area. Apart from his team, he may talk to the Chair Umpire and to the Referee. He may not talk to any Line Umpire. In addition to removal, the Captain is subject to the applicable provisions and penalties of the Davis Cup Code of Conduct. (c) The Referee may also make a recommendation to the Davis Cup Committee that the Captain be disqualified from acting in that capacity, or as a player, in subsequent Ties in that year's Competition, or in later Davis Cup Competitions.