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!