Serious question: Is there a way to scroll without using the arrow keys, scroll by pages without PgUp/PgDn, etc? I didn't see anything in the links you provided, and those buttons aren't very convenient on most keyboards I've used.
Yep. You can use Space to scroll a page down and Shift+Space to scroll a page up. For more precise scrolling, though, you will have to use the arrow keys or the mouse.
On MacOS, you can use the vim mode of Karabiner. This lets you hit and hold "s" and "d" at the same time and then use h, j, k, and l as the arrow keys. Sadly I haven't found equivelents for Windows or Linux.
