In modern web browsers and other software with text content, Space scrolls down more or less a screenful. ShiftSpace scrolls up in everything but
How can one use ShiftSpace to scroll up in
less? Or alternatively, is there another pager (POSIX compatibility is my only requirement) that could do the job?
I was told some terminal emulators, and some terminal UI libraries (ncurses?), don't recognize ShiftSpace. Is that a valid issue?