Originally Posted by
caspritz78
Schönefeld (SXL)
That should be SX
F.
Originally Posted by cova
X9 is the TXL Express.
Yes and no - the X9 goes to Zoo station via Jungfernheide (ring S-Bahn and U7). There is a separate line labeled TXL that goes to the central railway station, the Brandenburg gate vicinity, and terminates at Alexanderplatz.