Preserve scroll on Linux console switch

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http://unix.stackexchange.com – I've configured really sweet keystrokes for switching between, and scrolling in, a tty (the Linux console). But, as soon as I change from one tty to another (or, from X to a tty), I cannot scroll anymore! But, scrolling still "works", since, if I enter a new command, I can scroll that output (in addition to the output not "lost" when I returned to the tty, i.e., what was left on the screen when I changed in the first place). (HowTos)