..........                                          ..........
.........:                                          :.........
........:~                                          ~:........
.......:~:                                          :~:.......
......:~:%                                          %:~:......
.....:~:%£                   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!        :~:.......
......:~:%                                          %:~:......
.....:~:%£                                          £%:~:.....
....:~:%£@                                          @£%:~:....
...:~:%£@£                                          £@£%:~:...
..:~:%£@£#                                          #£@£%:~:..
.:~:%£@£##                                          ##£@£%:~:.