Large counties typically assign newly filed lawsuits randomly to individual courts to defeat efforts at judge-shopping (a form of forum-shopping), and require re-filed cases involving the same parties to be transferred back to the original randomly-drawn court. Some of these multi-court jurisdictions (e.g., Bexar County/San Antonio) use a centralized docket system, which undercuts the ability to predict which judge will hear a particular motion or try a case, because the assignment of the matter will depend on the availability of judges on a given day. In that system all cases retain their formal assignment to a particular court. The centralized docket system is, at least in principle, more efficient in allocation of judicial resources, and is legally feasible because trial judges in counties with multiple courts are authorized to switch benches and sit for each other. In appeals from such local court systems, the number of the district court provides no clue as to who signed the judgment. The judge must instead be identified by name. Additionally different orders in the same case may have been signed by different judges.