Please make sure the page has finished loading before you browse the FAQ list.
Is it possible to display railroad lines as black-white dashed line?
Yes, use for the appropriate link type two stroke layers, one covering the other partially. See e.g. in the example KA.ver
(easily found in Help -> Examples -> Open example Karlsruhe)
under Graphic -> Graphic parameters -> Links -> Display the classes 'Rail' and 'PuT'.