side of the blind the tilt cords 9 pass through a fitting 11 that is adjacent the cord lock if desired the positions of the cord lock 7 and the fitting 11 could be reversed in another cording arrangement the lift cords and tilt cords would exit the headrail on the right side of the blind as indicated by cord lock 7 39 lift cords 8 39 tilt cords 9 39 and fitting 11 39 shown in chainline in fig1 in the alternative cording arrangement shown in chainline the cord lock 7 39 is shown inboard of the tilt cords 9 39 in a first preferred embodiment shown in fig2 through 7 i provide a headrail 2 having a base 12 a first wall 13 and a second wall 14 in this embodiment the cord lock 7 is inside the headrail when configured as shown in fig2 through 4 the first wall 13 is the front of the headrail however when configured as shown in fig5 and 6 by reversing the blind putting the backside of the headrail on the front side and switching the control from front to back the first wall 13 is the rear or back of the headrail a slot 15 is provided in one end of the first wall 13 and a similar slot 16 is provided in one end of the second wall 14 both slots 15 and 16 are identical in size and shape in the configuration of fig2 through 4 a plug 18 is placed in slot 16 and a fitting 17 is placed in slot 15 the fitting has route holes through which the lift cords and tilt cords pass although the cord lock 7 is a separate component in this embodiment the cord lock could be part of the.