Personally, I like to use one word to let my dogs know that they will be rewarded for their behavior. I say "yes" in replace of the clicker. I make my oldest GSD sit and wait by his food dish (occasionally), then I'll tell him "yes" and he can eat.
Maybe this wasn't exactly the answer you were looking for. If so, my apologies. Someone else will give you a better one.
Varick vom Haus Jeffery
Dark Sable, intact male
DDR/West German Show Lines