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!