"We use both Final Cut and Avid, and there's no visible difference between the two, " he says.

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Perhaps its most visible difference from previous versions of Windows will be its compatibility with touchscreen technology.

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Natasha Baker, another British dressage rider born without much function in her legs, said the only visible difference is that she doesn't use stirrups.

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Mr. Alexander said he would offer a stylistic difference, saying Ms. Gill hadn't played a visible role in her district and accepted campaign donations from special interests such as check-cashing companies and political action committees.

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Proponents of the change say it would make no difference, other than to make the true financial state of a company more visible.

ECONOMIST: Congress gets tough | The