Friends                 The friendship network of 21 managers in a
                        high-tech company
contract                Group the Chosen Players in a Network
diffusion               Compute the Diffusion Centrality Score in a
                        Network
fragment                Compute the Fragmentation Centrality Score in a
                        Netwrok
kpcent                  Compute Group Centraltiy in a Network
kpset                   Selecting the Most Central Group of Players in
                        a Network
mreach.closeness        Compute the M-reach Closeness Centrality Score
                        in a Netwrok
mreach.degree           Compute the M-reach Degree Centrality Score in
                        a Netwrok
