typedef struct CONTRACT
{
	DATE	time;			// or trading class
	float fAsk, fBid; // premium without multiplicator
	float fVal;			// open interest or multiplier
	float fVol; 
	float fUnl;			// underlying price
	float fStrike;
	long	Expiry;		// YYYYMMDD
	long	Type;			// PUT, CALL, FUTURE, EUROPEAN, BINARY - functions.h
} CONTRACT; // for options, futures, FOPs