•ORDER_SIDE_UNSPECIFIED = 0
•ORDER_SIDE_BUY = 1
Describes the purchasing side of a trade.
•ORDER_SIDE_SELL = 2
Describes the selling side of a trade.
•ORDER_EXTENDED_SIDE_UNSPECIFIED = 0
•ORDER_EXTENDED_SIDE_SELL_SHORT = 1
Short sale of asset the seller does not own.
•ORDER_EXTENDED_SIDE_SELL_SHORT_EXEMPT = 2
Short sale exempt from short-sale rules.