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!