How do you drain a toilet hookup?

how do you drain a toilet hookup?
You're going to hafta be a little more explicit then that. Are you asking how to remove the water entirely? From the tank, bowl and trap? What is it that you wish to accomplish? Back to you. Yom

You drain a toilet hook up into a 3" or 4" pipe connected to the sanitary system in your home with a gradual fall on the pipe at 1/8" per foot fall. And put a vent so it will flow smoothly.

Doug,
I guess I'm just too literal. If he would have said "connect" instead of "drain" I would have picked up on it. "Hookup" should have clued me in. My bad! Tom

Lol, tom, I guessed at it.