I was in book's a million one time, and I was reading this book on dreams, they say people that can lucid dream (they didn't guve it a name they just said those who can control it), there are somethings that they can't do, like turn ion a light, and I think open a door, not to sure about the last one, its been a while.
I barely have dreams, (that I remember) one thing I know I can do when dreaming, is that when I realize I'm dreaming (or in the case where I remember it), I know that I can wake myself up at will, but I don't have to, I basically control when I want to wake up, but not the actions in the dream sadly