@jeder that's a separate denomination for express trains that skip a lot of stops and/or run along high-speed lines cjx 9 runs non-stop from wiener neustadt into vienna to decongest railjet services between the two cities cjx 5 runs on the high-speed line between wien westbahnhof and amstetten, making most, but not all local stops cjx 1 runs between innsbruck and kufstein on the high-speed line etc