3s-MSRD-ES (3-strategy Maynard Smith Replicator Dynamics with Endogenous Separation) is a
Mathematica notebook that shows the phase portrait of the Maynard Smith Replicator Dynamics with
endogenous separation in any 2-player 3-strategy game, with endogenous separation. For further details, please read the paper
"Successful strategies in the voluntarily repeated Prisoner’s Dilemma"