TORONTO, Mar 31 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Rises 45.42 points, or 0.35 percent, to 13,083.92 at open.TORONTO, Mar 31 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Unofficially closes up 340.25 points, or 2.61 percent, at 13,378.75.