The answer is the number of orders currently open by the trading account.
Data
Order Type (optional)
You select the order type when you want the number of orders open corresponding to a specific type.
If no type is selected, all types would be considered.
Symbol (optional)
You specify the orders symbol when you want the number of orders open corresponding to a specific symbol.
If not provided, all symbols would be considered.
Magic Number (optional)
You specify the orders magic number when you want the number of orders open corresponding to a specific magic number.
If not provided, all magic numbers would be considered.
Comment (optional)
You specify the orders comment when you want the number of orders open corresponding to a specific comment.
If not provided, all comments would be considered.