These are the detailed schedules involved in a Train Split. On the left you see the schedules of the incoming train, on the right the resulting outgoing trains. Please note how the schedules reference each other. Also note, that the length entry of the referenced schedule in the outgoing schedules refers to the length of the last “real” leg (section) of the incoming schedule. The length of the incoming trains is 150 m, and it is split to two with 75 m in length each, so in the split schedule of the incoming train you can see that the lengths of the outgoing trains add up to the length of the incoming train.
The order in which the outgoing trains are listed in the outgoing schedule is important. It indicates in which order each train part is located when it is split starting from the head until you reach the tail. Front and tail is determined which direction the train traveled when arriving in the station. If both train continue in the same direction, the first one would have to leave first. If the trains leave in different directions, the first one continues in the direction the original train as arrived, while the second one heads back to where it came from. If you send a train to a dead-end track for a split there, as in our example here, both parts head back where the train came from. So you want to be sure that the tail part would be the one to move out first – which is the case since “OK1399” starts an earlier schedule than “OK1415”: