FourHbootstrap          Bootstraps of the incidence-based 4H Index
FourHbootstrapA         Bootstraps of the abundance-based 4H Index
FourHcentroid           Centroid of bootstrapped 4H-indices
FourHcompare            Tests whether multiple systems have
                        significantly different 4H-indices
FourHnull               Bootstrapped null models of the 4H-index
FourHnullplane          Null Plane
FourHnullplaneD         Bootstrap Distribution Around the Null Plane
FourHpreanalysis        Bootstraps of the percentage of gamma diversity
                        that is core
FourHquaternary         Plot bootstrapped 4H-indices
FourHquaternaryC        Plot centroid of bootstrapped 4H-indices
