SDselectiongain         Function for calculating the standrd deviation
                        of selection gain
multistagecor           Function for calculating correlation matrix in
                        a plant breeding context
multistagegain          Function for calculating the expected
                        multi-stage selection gain
multistagegain.each     Function for calculating the selection gain in
                        each stage
multistageoptimum.grid
                        Function for optimizing multi-stage selection
                        with grid algorithm for a given correlation
                        matrix
multistageoptimum.nlm   Function for optimizing n-stage selection with
                        the NLM algorithm for a given correlation
                        matrix
multistageoptimum.search
                        Function for optimizing three-stage selection
                        in plant breeding with one marker-assisted
                        selection stage and two phenotypic selection
                        stages
multistageoptimum.searchIndexT
                        Function for optimizing three-stage selection
                        in plant breeding with one marker-assisted
                        selection stage and two phenotypic selection
                        stages
multistageoptimum.searchThreeS
                        Function for optimizing four-stage selection in
                        plant breeding with one marker-assisted
                        selection stage and three phenotypic selection
                        stages
multistagetp            Function for calculating the truncation points
multistagevariance      Expected variance after selection after k
                        stages selection
