@@.@@@..@@ @@.@.@.@..
.@@..@.@.@ .@@@@@@@.@
@.@.@@@@@. @......@@@
@@@@....@. @.....@...
...@...@@@ @....@@..@
..@@..@... rails @...@.@.@@
.@.@.@@... @..@@@@@.@
@@@@@.@..@ @.@....@@@
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..@...@..@ 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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