* Headlines for October 6, 2004 * Cheney, Edwards Clash Over Iraq and Justification for War in Vice Presidential Debate * Cheney Cites El Salvador Civil War That Killed 75,000 As Model for Afghanistan * Edwards Attacks Cheney On Halliburton Dealings in Iran, Bribing Foreign Officials and No-Bid Contract in Iraq * A Look at How Cheney Opposed Head Start, MLK Day, and the Release of Mandela