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!