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!