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Details of the TimeInForce values supported by Whisperer Enterprise for both categories are provided below.

TimeInForce	Nature	Colloquial Name	Description
IOC	Aggressive	Immediate or Cancel	The Order must be executed immediately, at least in part (Partial fills are allowed), otherwise the Order is cancelled. AKA 'Fill and Kill'.
FOK	Aggressive	Fill Or Kill	The Order must be executed immediately, in full (no Partial fills), otherwise the Order is cancelled.
DAY	Resting	Day	The Order expires automatically on close of the trading day, if it is still unfilled.
GTC	Resting	Good 'Til Canceled	The Order remains active until it is either executed or cancelled. NOTE: Maximum possible duration is one trading week, but is equivalent to DAY for most Venues that reset daily.
GTD	Resting	Good 'Til Date	Order is active until a specified time. TWAP?
GFT	Resting	Good For Time	Order is active for a specified duration. TWAP?
OPN

*

		At Market Open
CLS		At Market

Opening

Close

Order Types

There are three broad categories of OrderType:

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