TORONTO, Mar 11 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Falls 318.40 points, or 2.13 percent, to 14,639.69 at open.TORONTO, Mar 11 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Unofficially closes down 688.00 points, or 4.60 percent, at 14,270.09.