remaining 9. The transition is done in a transition area marked clearly on the map, just like in the FootO counterpart, however, each team member gets an identical map. No communication among team members is allowed, except when at transition the previously teammate may pass a team sheet, which only indicates which controls are answered (but not the answer themselves) and nothing else. After transition, the first and second team members are led to timed stations (which may be different for each leg), which is run using TempO rules with possible zero (Z) answer and 30 seconds penalty for each incorrect answer. The final score is calculated by adding all team members' time used at timed stations, plus 30 seconds penalty for each wrong answer at timed controls, and 60 seconds penalty for each point deduction (mistake or exceeding the overall time limit) in the precision course. The timed station for the third (final) leg is the final. When the third team member finishes the precision course, they are placed into a quarantine zone for the score calculation, and introduced into the timed station in reverse standing (i.e. longest time used first). There is also an alternative format, which resembles more to the FootO counterpart, where the only difference to the format above is in the precision orienteering course: All team members share the same control sites, where each team member must visit in order, but the answers for each leg may be different. The combinations for the controls may be different among teams, but all teams answers the same overall combination. (akin to the forking of FootO relay) Zero answer In advanced level of trail orienteering, apart from A, B, C, etc. which indicate the flag is the control shown on the map, there may also be the possibility for the answer to be Z (pronounced as zero), indicating there is no flag correctly placed at the control shown on the map. How far a flag must be placed off the correct location for a control to be considered as zero answer (zero tolerance) is a highly debated topic. Mobility aids Apart from a combustion-engine vehicle, any recognised mobility aids are permitted. Requested physical assistance is also permitted. Map The orienteering map is in ISSOM, usually at 1:5000 or 1:4000 scale. For timed and TempO controls, maps must be prepared in a very complicated way (the map must be