Oh, I see. Yes, different things.
I simply mean the option which allows the author to turn off the players' commands. So rather than the usual:
You are in the kitchen. You can go north.
>n
You are in the living room. You can go east.
>e
You are...
It would look like:
You are in the kitchen. You can go north.
You are in the living room. You can go east.
You are...
It just prevent the players' previous commands from showing on the screen.