It's not only true, it's a fact. All you do is back the limb bolts out (max of 5 turn and then alternate to each limb). There is a little "peep" window and you back the limb bolts out until only 3 threads are viewable on the limb bolt. At that point, the string/cable is slack and you can work with it.

I installed my peep and threaded in my rope from my rest into the cable this past weekend.