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!