Not much of an idea, but I frequently utilze two windows simultaneously, clicking back and forth to scroll one window to the information I need to type in for the other one. I would love to be able to scroll the non-active window as a standard windows operating environment feature.-- RayfordSteele, Jun 23 2009 They could make a feature where if you hold space and scroll it scrolls the next window?-- DIYMatt, Jun 25 2009 If you're talking about using the scroll wheel (or scrolling gestures on a trackpad), Windows 10 does this (optionally), and previous Windows versions can do this with the help of one of many small third-party utilities. macOS also does this, probably since Mac OS X 10.0 (maybe even Classic Mac OS, but that would surprise me). Also, on a Mac, I think you can do this without the scroll wheel by command-clicking the scroll buttons on a background window (if your OS is old enough to have those). And you can drag a background window around without focusing it by command-dragging its titlebar.-- notexactly, Jul 11 2019 random, halfbakery