Basically the second param (false), will tell CakePHP not to include the file in-line, but rather where the $scripts_for_layout is located.
A less known feature is that you can do the same for your CSS files. So, if you need to include some style that is specific to a given view, add something like this to your view file:
$html->css(‘myViewCss’, ‘stylesheet’, array(“media”=>”all” ), false);
Again, you simply need to specify a ‘false’ parameter. This will tell CakePHP to include the CSS file where the $scripts_for_layout variable is located (which should be in the).