The variables affected are as follows (in order):

Variable		Type of Handling	Explanation
FromDates		Trailing Zero Size (one range)	If this range has trailing zeros, the range will be shortened to last non-zero element. So {0,20,0,30,0,0} would be shortened to {0,20,0,30}.
FromDates		Check Ascending	The dates in this range must (after any previous range-handling adjustments) be in order of ascending date.
FromDates AnnualRates		Date Size	The first (date) range will be shortened to the first non-zero element, eliminating trailing zeros. If the second range is then longer then it will be shortened to the size of the date range. If the second range is shorter it will be padded by zeros. If both the date and the corresponding value are zero at any location in the range, the range is compacted and shortened.
FromDates AnnualRates		Check Same Length	The length of these ranges (after any previous range handling adjustments and including any blanks or zeros) must be the same length or the function will report an error.