I made a file that actually displayed the railways as you built them. Playing as Russia I did all of her territory but abandoned the game as the AGEOD team were "too busy" to fix a bug that left the player of Russia unable to EVER upgrade the Russian Cavalry, and in those days cavalry was important, but not important to their grand game it seems.
I got as far (making visible railway lines to show the best way of transporting your troops) as East Africa before giving up (making a railway actually SHOW on the map once you'd PAID for it.). The visual info is important to the viewer.
Toby