some questions about this package

Hi Dmitry, thanks for this great class.
I have some questions about this package:

1- what do this below code in example.php? $task->execute(array(100, 'task 1: '));

I mean what is that 100 and 'task 1: '? where can I give my script's url that is going to start asynchronously?

2-Do this package works in windows? or is there any SIMPLE alternative solution that this packages works in windows just as my developing enviroment?

3-how to use this package without composer? just require_once('src/AsyncTask.php'); ?

UP :|
I don't know how to use it :(
what do this below code in example.php?
$task->execute(array(100, 'task 1: '));