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.~«^†£¶###                   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. #¶¶££†^«~.
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....«†††£¶                 ££££££££                 ¶£†††«....
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.~«^†£££¶# 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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