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!