I used to use Tofu incessantly when I used Macs at home + work, I've been meaning to write a clone in some X toolkit or XUL for a while. You have it exactly ri

I used to use Tofu incessantly when I used Macs at home + work, I've been meaning to write a clone in some X toolkit or XUL for a while. You have it exactly right, it jumps one column at a time XOR one screen's worth at a time. When you first set it up you tweak not just the font + colors, but the width + padding of the columns. I used to use it on my 12" PowerBook all the time, set up with one of the Vista fonts in light lavender on very-dark gray, with two columns fit onto the 1024x768 screen with the window maximized. I read millions of words that way, it's easily the fastest and least-fatiguing reading method I've used, though the ergonomics of the laptop ain't great.