archain This code is a modification of Seppo Mikkola's algorithmic chain code "AR-Chain". Compile with gfortran -o archain archain.f. Run with archain < test.in. Output in test.out: Time, MCL, RPL, M_BH1, R_BH1, M_BH2, R_BH2, ... , M_BHN, R_BHN