There's a whole slew of new commands coming in the next release. Input is greatly cleaned up, and now supports the IR remote and keyboard. The easy one to remember is:
"ANY" is a "special" input command. The white paper describes others, but "ANY" grabs any valid input queue message, kind of like an "any key"
Look in the internal.xml file for more examples. You'll find the new stuff is 100% more responsive than the old stuff.