Validity of orders

Validity of orders are DAY,COL,IOC.I could understand DAY.

What do COL - IOC mean and its implication ?

COL: Cancel on logout (so all your pending orders get cancelled when you logout of the trading application)

IOC: Immediate or cancel (So if your entire quantity and price is not filled immediately when you place an order, it gets cancelled).

Try to know about FOK orders too.

ThanQ Nithin.Now I am clear.