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In London, the FTSE index of leading shares gained 0.37 percent at 5,657.44 points. In Paris, the CAC-40 index added 0.89 percent to 3,225 points while in Frankfurt the DAX 30 jumped by 1.23 percent to 6,220.01 points. S&P said it had cut France's top AAA rating to AA+ but would maintain Germany at the highest level.