er may discover this procedure far more efficacious: to begin at Point A and proceed gently yet firmly to point B as described. Divergently, however, please proceed to point D (!) and then directly by knife edge to point C, parallel to the Line AB already created, yet along the opposing edge. Having thusly formed two parallel slits, find the midpoint between Point B and Point C as close to the edge as possible, probing and then plunging the tip of the knife through the cardboard membrane, throug