Airbnb wrote software that combs through these messages to strip out e-mail addresses and phone numbers, even ones that are typed out in letters.

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Interview everyone who has a grudge against him--old secretaries who had to correct his grammar on the letters they typed, the neighbor who had to deal with the leaves from the Hatch maple tree.

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The letters are typed and signed by Chapman.

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Thousands of feisty letters to Congress were angrily typed and sent and sent again.

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Although these bigger finger targets made it so I never accidentally typed the wrong square, it took me a while to get used to knowing where each letter was and which letters weren't in squares at all.

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