TORONTO, Aug 12 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Rises 148.55 points, or 0.90 percent, to 16,645.56 at open.TORONTO, Aug 12 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Unofficially closes up 84.65 points, or 0.51 percent, at 16,581.66.