Click Live Account on FXOpen homepage and fill in the registration form.
A measure of the size of volume available for transaction purposes for a particular instrument at a particular point in time. The best Offer (BID) and the best ASK are displayed in a table with the size available to buy or sell.
In ECN accounts you can view market depth data (the 5 best BID and ASK prices and the volumes available at each price). Download One Click Trading Level2 Plugin.