$session->flash() in view displaying a 1

Hey,

I baked a controller with the following snippet:

$this->Session->setFlash(__('List has been saved', true));

Why the underscores, and what does true denote, I couldn't find a
reference anywhere?

Also in my view

echo $session->flash();

is returning <div id="flashMessage" class="message">List has been
saved</div>1

After an evening of hunting....where on earth is that 1 being
generated, and how do I do away with it?

Thanks for any pointers!
Taff

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