Suit may revise chapter on tech history: Origins of MS-DOS Software's creator disputes book's description of it being a 'rip-off' A decades-old quarrel over a defining event in computer history -- the creation of the program that propelled Microsoft to dominance -- has suddenly become a legal dispute that could lead to a public trial. Tim Paterson, the programmer widely credited for the software that became Microsoft's landmark operating system, MS-DOS, filed a defamation suit this week against prominent historian and author Harold Evans and the publishers of his book, "They Made America," released last year. At issue is...