argumentlist = any combination of numbers, cells or ranges
VSUM returns the ``visual sum'' of its arguments. This function differs from SUM in that it uses the precision and rounding of the actual formatted values appearing in the cells instead of the internal double-precision value of the cell. This ensures that what you see is what you get when calculating a sum.
VSUM(L1..L3) = .99 where L1 = 1/3, L2 = 1/3, and L3 = 1/3 and are displayed with two decimal places
Excel function: N/A