So let's say that you have a copy of Kickmaster for some reason, and you're tired of slogging through the first couple of stages because of the bad control, the wonky hit detection, or any number of other reasons.
Well, in that case, you could go to the password screen.
And enter this password
Done right, you'll be taken to the Debug Screen
Which doesn't look so much like a debug screen as a level select screen.
But, hey, nobody's arguing semantics here.