Ok, so I created a print stylesheet that hides the sliders, and I added some corresponding code for stuff to print (and hide that during screen display). That gets me much closer to something I could live with.
Unfortunately, there’s some detritus that doesn’t get hidden when I hide slider1 and slider2…like a random blue hrule and the dots that are later filled to become the slide controller in the demo. And there’s a bunch of white vspace between the image I add with my print-only hack and those buttons. Do I need to assert that something is “important” to cure this?
The detritus elements change if I switch to a different mode before I do the print preview.