cluster-internal package:cluster R Documentation _I_n_t_e_r_n_a_l _c_l_u_s_t_e_r _f_u_n_c_t_i_o_n_s _D_e_s_c_r_i_p_t_i_o_n: Internal cluster functions. _U_s_a_g_e: meanabsdev(y) _D_e_t_a_i_l_s: These are not to be called by the user.