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!