Enumeration members
BUY_CLOSE
BUY_CLOSE = "BUY_CLOSE"
BUY_OPEN
BUY_OPEN = "BUY_OPEN"
BUY_TO_COVER
BUY_TO_COVER = "BUY_TO_COVER"
EXCHANGE
EXCHANGE = "EXCHANGE"
SELL_CLOSE
SELL_CLOSE = "SELL_CLOSE"
SELL_OPEN
SELL_OPEN = "SELL_OPEN"
SELL_SHORT
SELL_SHORT = "SELL_SHORT"