@,@,,@@,,, @@@,,@@,@,
@@@@,@,@,, ,,,@,@,@@@
,,,,@@@@@, @,,@@@@@,,
,,,,@,,,,@ @@,@,,,,@,
,,,,@@,,,@ @,@@@,,,@@
@,,,@,@,,@ 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! @@@,@@@@,@
@@,@,@@@,, ,,,@@,,,@@
,,@@@@,,@, ,,,@,@,,@,
,,@,,,@,@@ @,,@@@@,@@
@,@@,,@@@, ,@,@,,,@@,
@@@,@,@,,@ ,@@@@,,@,@
,,,@@@@@,@ ,@,,,@,@@@