What is status of order_magic_number when it has not been set?

[J Webster]

What is the status of order_magic_number when it has not been set?

Does it = 0 or NULL or empty?

[Alexander]

Look documentation:

int OrderSend(

string symbol, int cmd, double volume, double price, int slippage, double stoploss, double takeprofit, string comment=NULL, int magic=0, datetime expiration=0, color arrow_color=CLR_NONE)