I received my tuner yesterday, thanks empeg guys!

What does the DNPP button do on the kenwood remote when in the tuner?

I get a low brightness horizontal line towards the top of the screen which toggles when pressing this button. Could this button instead be used to change the preset bank?

I've now ordered the Rio remote, as even though I have owned an empeg (I & II) for over two years, I still can't remember what all the buttons do on the Kenwood remote!

Phil.