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###££%^-~. ££££££££££££££££££££££££££££££££££££££££ .~-^%££###
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###££%^-~. ££££££££££££££££££££££££££££££££££££££££ .~-^%££###
#££^~~....                                          ....~~^££#
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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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