Traditional fixing of raising cords on pleated blinds occurs by sewing plastic flaps in place that hold knots on the raising cords. Adjustment of tension in the raising cords is difficult, because it may be required to loosen the knot and re-tie it in a better location. Loosening and re-tying is avoided in that a plastic clip has slits, in which the raising cords are pinched and locked after being wound 1½ turn around an interjacent tongue in the plane of the plastic clip.