If there's one thing that annoys lawyers and writers and editors alike, it's the custom of using product trademarks as generic words. It happens when one product looms large in a market, people just use the trademark to describe the task it performs. Hence, we xerox documents with a lowercase x, and hoover carpets with a lowercase h. And we never ricoh or lanier a document, even if our photocopiers are not Xerox branded. Writers' trade journals are rife with lawyer-driven ads to protect trademarks. These ads are comically legalese, insisting that if a character wipes his nose, it