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!