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!