An adjudicator is someone who presides, judges, and arbitrates during a formal dispute or competition. In most families, the underboss arbitrates many of the disputes. Its also arbitrates disputes in the energy industry. The file system arbitrates access to that subsystem, preventing write collisions. She also arranges marriages for her own family and arbitrates conflicts for men and women. A jirga arbitrates based on tribal consensus and tribal values among clients. For the CFP period, the base node arbitrates channel access. It also arbitrates collisions of the mouse pointer and icons and control of "animated icons". A chief arbitrates and decides political and economic questions in his area.