OrderAction BuyToCover vs Buy in Unmanaged code

[alex.nt]

Hi,

What is the difference between OrderAction.BuyToCover and OrderAction.Buy in unmanaged code?

Example:
1. Position is Flat
2. Submit Order OrderAction.Sell @ 1
3. I am 1 contract short

In order to reverse the position, what should I do?

a) Submit Order OrderAction.Buy @ 2
Or
b) Submit Order OrderAction.BuyToCover @ 1 and then Submit Order OrderAction.Buy @ 1

In other words, when do I have to use OrderAction.BuyToCover / OrderAction.SellShort?

Thanks.

[NinjaTrader_Joydeep]

Hello alex.nt,
For futures it wouldnt matter what you use however in case of stocks, some connectivity provider (like TDA) specifically asks the order to be "tagged" to differentiate a short sell and buy to cover against a normal buy and sell.