Specifies how a strategy exits positions when the ExitLimit formula is used
Intraday - ExitLimit specifies the price of a live limit order to be placed each day (default)
AtClose - exit at the close if the closing price touches or exceeds the ExitLimit price
AtOpen - exit at the open if the most recent closing price touched or exceeded the ExitLimit price
For a long position, an AtClose ExitLimit at price N is equivalent to an ExitRule of "C >= N" with ExitTime of AtClose.
For a long position, an AtOpen ExitLimit at price N is equivalent to an ExitRule of "C >= N" with ExitTime of AtOpen (or unspecified).
The main purpose ExitLimitTime is to enable trailing at-close-only limit orders using PrevExitLimit.