This page displays information relevant to an order window.
Toggling b/w Buy and Sell
You have the option to switch from Buy to Sell and vice versa from the same window.
Toggling b/w NSE & BSE
You have the option to switch from BSE to NSE and vice versa from the same window.
Bid/Ask Spread
The Bid-Ask Spread is the difference between the highest price that a buyer is willing to pay and the lowest selling price. The Buy/Sell window displays it.