How do I handle multiple arguments with `hook_drush_command()`?
In the 'official' make-me-a-sandwich command:

function sandwich_drush_command() {
  $items = array();

  // The 'make-me-a-sandwich' command
  $items['make-me-a-sandwich'] = array(
    'arguments' =&gt; array(
      'filling' =&gt; 'The type of the sandwich (turkey, cheese, etc.). Defaults to ascii.',
    ),
  );
}


Arguments is clearly an array. Add new keys to it.