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!