e anything, valid in a Handlebars expression (context identifiers, string or number literals, boolean literals or private variables).</p>

<p>Your helper implementation can access parameters using the <a href="#//api/name/positionalParameters">positionalParameters</a> and <a href="#//api/name/namedParameters">namedParameters</a> properties.</p>

<h2>Private variables</h2>

<p>Another important feature of Handlebars.js is the ability for block helpers to write private variables available to descendant blocks