Introduction

It's easy for a non-disabled person to browse the Web. Point your mouse, see the screen, ignore (or read) the ads and the navigation on a page, and concentrate on the central area of a web page that contains the content. Skim through the headings, search for an interesting picture, and then settle your eye down to read the actual information.

Fine and dandy, if you aren't old and don't have arthritis, Parkinson's disease, or multiple sclerosis, and therefore have the motor control necessary to point your mouse. It's a piece of cake to listen to that news report if you aren't deaf, and easy as pie to find the main content if your vision is good enough to read—or if you are sighted at all. No problem ignoring all those flashing ads, ...

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