 Other variants of these standards include Object Oriented Function Points (OOFP) and newer variants as Weighted Micro Function Points, which factor algorithmic and control flow complexity.The best Functional Sizing Method depends on a number of factors, including the functional domain of the applications, the process maturity of the developing organization and the extent of use of the FSM Method.There are many uses and benefits of function points beyond measuring project productivity and estimating planned projects, these include monitoring project progress and evaluating the requirements coverage of commercial off-the-shelf (COTS) packages.