TORONTO, Aug 18 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Rises 45.61 points, or 0.27 percent, to 16,701.73 at open.TORONTO, Aug 18 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Unofficially closes down 41.62 points, or 0.25 percent, at 16,614.50.