I can't believe I'm admitting to this but I went into convulsive laughter at myself when I was reading a digital billboard and no matter how many times I pressed my steering wheel, it would NOT go back to the previous screen so that I could read it. YES, I did that! That's the price we pay in the computer age where the arrow keys will allow you to return to the previous screen and TIVO/DVR allows you to go back as well.
If anyone else has ever attempted to do that, please let me know that I'm not the only nutcase!