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