bd2b3be3f4932042" class="declaration"><a class="toggle-link" href="#comment-letterNumber-f8abc1ee91b58ac3bd2b3be3f4932042">case letterNumber</a> <span class="required">Required</span><div class="comment collapse in" id="comment-letterNumber-f8abc1ee91b58ac3bd2b3be3f4932042"><p>A letter-like numeric character.</p>
<p>This value corresponds to the category <code>Letter_Number</code> (abbreviated
<code>Nl</code>) in the
<a href="https://unicode.org/reports/tr44/#General_Category_Values">Unicode Standard</a>.</