Legs

Tag	Name	Type	Description
555	NoLegs	NumInGroup	Number of InstrumentLeg repeating group instances.
	InstrumentLeg	Component
564	LegPositionEffect	Char
565	LegCoveredOrUncovered	Int
	NestedParties	Component
654	LegRefID	String
566	LegPrice	Price
587	LegSettlmntTyp	Char
588	LegFutSettDate	LocalMktDate
637	LegLastPx	Price