{meta title='The page itself', about='Without a parameter: the template and the PHP of the page asked for, as tabs.'}
<p>{$greeting}, {$visitor}!</p>
{source}

<?php

  $greeting = 'Good morning';
  $visitor  = 'Ana';

?>

{
  "trans.cart.title": "Your <em>shopping</em> cart",
  "trans.cart.checkout": "Go to checkout",
  "trans.cart.items": "Your cart is empty|One item in your cart|%d items in your cart",
  "trans.greeting": "Hello :name, welcome back to :place."
}