One plan across trains, buses and the walk at either end. Search a station or a bus stop — or start from exactly where you are.
Ordinary planners treat trains and buses as separate worlds. This one searches them together, along with the walking in between, so the answer is the actual door-to-door trip rather than the rail leg with the ends left as an exercise.
Rail only? Track a train plans and shares a single rail journey. Buses only? The bus planner works stop to stop.