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