Comment on Market Watch & Trading Screen
Check this image Rakesh http://zerodha.com/z-connect/wp-content/uploads/2015/01/img_54b3d299c3432-1024×576.png , there are two columns – MTM and Q-total P&L. MTM shows all profit and losses based on yesterdays closing price. Q-total P&L shows it based on your actual traded price.