Scrolling output in split screen with mouse WITHOUT using extra control sequences

[Carl Ponder]

    I'm using a split screen

split -v
mousetrack on

    and want to be able to use my mouse to (1) copy/paste text and (2)
    scroll up-and-down each screen the way I do in my xterm windows.
    
    #1 I don't want to have to type extra <ctrl>-A or
    <shift> to make it work.
    I already know I can use <shift> to make copy-paste work. I
    want to make it work without <shift>.
    
    #2 I want to scroll through the screen *output*, not the
    command-history, which I already know how to do.
    
    I've see a lot of old postings that repeat how to use <shift>
    and <ctrl>-A sequences, which I don't want to do.
    Because they're old postings, though, I'm wondering if the newer
    versions of screen might have better support for this.