FANUC TCYC

Ok, just a dumb question because I can't seem to find info on this:

What is TCYC on FANUC R30iA Controllers?
How do I turn it on?
More importantly...how do I turn it OFF?
Started up a back up robot for a client and couldn't move it until I cold started the robot. I hate not knowing what's going on with one of these guys.

I was never aware that FANUC had a Dry Run for palletizing robots.
As I said, dumb question but thank you for the answer. Makes sense now.

Whatever it is, it just gave me a bit of a head ache at the time. The client had been playing with the robot before hand and I had no idea what they changed or altered anywhere as they have the uncanny ability of forgetting what exactly it was they pressed before I arrived.