. You can try to copy them, you can even replace them by new objects when evaluating blocks passed to the helper, but you should never modify the context you do not own. Really.</p>

<h2>Helper parameters</h2>

<p>One of the key feature of Handlebars.js is the ability for template writers to pass parameters to the helpers. Those parameters, directly specified in the template (and not in the context), can be general view configuration settings (that&rsquo;s why they should never be set in context), and can b