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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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