The threshold data structure.
typedef struct _THRESHOLD {
USHORT Length; /* Length field. */
USHORT Level1; /* First movement level. */
USHORT Lev1Mult; /* First-level multiplier. */
USHORT Level2; /* Second movement level. */
USHORT Lev2Mult; /* Second-level multiplier. */
} THRESHOLD;
typedef THRESHOLD * PTHRESHOLD ;