Curtain rail
FIG. 1 is a perspective view from one end of a curtain rail in accordance with the invention, the perspective view from the other end having the same appearance; 
     FIG. 2 is a top plan view of the curtain rail of FIG. 1; 
     FIG. 3 is a bottom view of the curtain rail of FIG. 1; and, 
     FIG. 4 is a side elevation view of the curtain rail of FIG. 1, the other side view being the same. 
     The drawings are broken to show that the length of the rail may vary.