riable is named &ldquo;index&rdquo; and can be referred to as @index in templates and via the data access on HBHelperCallingInfo within helpers implementation.
While helpers can read and set private variables, they should never modify the data context they received directly but instead copy it first and modify the copy before passing it to descendant contexts.</p>

<p>Please see <a href="../Classes/HBDataContext.html">HBDataContext</a> for more information.</p>
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