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!