TORONTO, Apr 21 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Falls 281.79 points, or 1.96 percent, to 14,106.49 at open.TORONTO, Apr 21 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Unofficially closes down 448.22 points, or 3.12 percent, at 13,940.06.