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.#.#.##.##                                          .##.##.#.#
.#.#..#..#                   rails                  ..#..#.#.#
.#.#.##.##                                          .##.##.#.#
.#.#..#..#                                          ..#..#.#.#
.#.#.##.## ######################################## .##.##.#.#
.#.#..#..#                                          ..#..#.#.#
.#.#.##.## ######################################## .##.##.#.#
.#.#..#..#                                          ..#..#.#.#
.#.#.##.##                                          .##.##.#.#
.#.#..#..# trains  are  so  constructed  that  they ..#..#.#.#
.#.#.##.## have to  follow a set path. this path is .##.##.#.#
.#.#..#..# called a "railway",  which  is comprised ..#..#.#.#
.#.#.##.## of two metal rails, hence  its nickname. .##.##.#.#
.#.#..#..#                                          ..#..#.#.#
.#.#.##.## because  the  low friction  between  the .##.##.#.#
.#.#..#..# wheels of the train and the  rail metal, ..#..#.#.#
.#.#.##.## there are limits for  how  acute a curve .##.##.#.#
.#.#..#..# can be, and  even more  so  for how much ..#..#.#.#
.#.#.##.## the  ground  under   the  rails  can  be .##.##.#.#
.#.#..#..# sloped. thus  a railway is often not led ..#..#.#.#
.#.#.##.## on top of hills, rather through them  in .##.##.#.#
.#.#..#..# tunnels   (if   they  are   large),   or ..#..#.#.#
.#.#.##.##            artificial chasms.            .##.##.#.#
.#.#..#..#                                          ..#..#.#.#
.#.#.##.## there will be trees on  the  side of the .##.##.#.#
.#.#..#..# rails, but  not  too close, or they will ..#..#.#.#
.#.#.##.## be  cut  down by  the railway  janitors. .##.##.#.#
.#.#..#..# there  will  be  plains,  and bodies  of ..#..#.#.#
.#.#.##.##                  water.                  .##.##.#.#
.#.#..#..#                                          ..#..#.#.#
.#.#.##.## trains  go  by  day and by night.  along .##.##.#.#
.#.#..#..#       the way, there is information      ..#..#.#.#
.#.#.##.## scattered, often put  on  top of  poles, .##.##.#.#
.#.#..#..# to be interpreted by the train  drivers. ..#..#.#.#
.#.#.##.## different  parts  of  the  railway  have .##.##.#.#
.#.#..#..#          different speed limits.         ..#..#.#.#
.#.#.##.##                                          .##.##.#.#
.#.#..#..# sometimes, trains have  to stop and wait ..#..#.#.#
.#.#.##.## for something to happen, far  away. this .##.##.#.#
.#.#..#..# is signaled  by  red  or  green  lights. ..#..#.#.#
.#.#.##.##                                          .##.##.#.#
.#.#..#..#                 ########                 ..#..#.#.#
.#.#.##.##                                          .##.##.#.#
.#.#..#..# many  people follow  the rails  by foot. ..#..#.#.#
.#.#.##.## often  this  proves  to  be  the shorter .##.##.#.#
.#.#..#..# path between  two  points. however  this ..#..#.#.#
.#.#.##.## is  frowned  upon,  and  very   impolite .##.##.#.#
.#.#..#..#         toward the train drivers!        ..#..#.#.#
.#.#.##.##                                          .##.##.#.#
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