set_namespace(rosettacode)_me();

add_ary(a)_values(1,2,3);
add_ary(b)_values(4,5,6);
me_msg()_ary[a]_concat[b]
me_msg()_ary[a]_concat()_ary[b];  // alternative
me_msg()_calc([a]+[b]);            // alternative

reset_namespace[];