Preferably, use a perforating wheel to cut,
but in lack of such, you can cut along lines with a scalpel,
taking care to not cut all the way to the edge.
I bought this for myself for three reasons. One, the dot, two, the other dot, three, the precision. Added bonuses per the companies description: symmetrically designed for left and right-handed use. Auto-Lock (Ratchet-lock slider). 30 degree AD-type blade installed (58 degree BA-type blade is also applicable). Ideal for precision work. Built-in blade snapper. I do appreciate how it is flat and can easily rest in the pocket. The retracting blade puts all other blades to shame. If this is the future, I am in.