This map covers the line from Älvsjö in Stockholm to Södertälje. Until Flemingsberg the two outer tracks are used by "fast" trains and the two middle tracks for "slow" trains. A new line for long-distance trains from Flemingsberg to Järna via a new passenger station Södertälje Syd opened somewhen around 1990 - since then the Flemingsberg-Södertälje line shown here is only used by "pendeltåg" commuter trains (and freight?).
There's plenty of space for extension of the map. I hope somewhen to get the time to extend with the new and old lines to Järna (or beyond towards Katrineholm or Nyköping), and there's also a line towards Eskilstuna which branches of from Södertälje Hamn / Södertälje Syd.
There would have been a map of Södertälje Hamn here if it had not started to rain just as I had taken out my sketchbook and my binoculars.