arangosh> for (var i = 0; i < 10; i ++) {
........>         require("internal").print("Hello world " + i + "!\n");
........> }
Hello world 0!

Hello world 1!

Hello world 2!

Hello world 3!

Hello world 4!

Hello world 5!

Hello world 6!

Hello world 7!

Hello world 8!

Hello world 9!