Here’s a very quick tip for those of you who use Mozilla’s free or Firefox browsers, and have a mouse with a scroll wheel. Have you ever wanted to change the font size on a displayed Web page? Perhaps ...

Nearly three years ago, I reviewed an early version (1.1b1) of Marc Moini’s Smart Scroll, a utility that let you scroll documents—line-by-line, as opposed to paging up and down—using the keyboard.

If you are using a desktop or even a laptop with an external mouse, you just need to use the middle-clicking button of your mouse, and the entire webpage will scroll automatically. But you still have ...