east 6 characters.
<p>

   The optional <code class="code">precision</code> is a dot <code class="code">.</code> followed by an integer
   indicating how many digits follow the decimal point in the <code class="code">%f</code>,
   <code class="code">%e</code>, and <code class="code">%<span class="constructor">E</span></code> conversions. For instance, <code class="code">%.4f</code> prints a <code class="code">float</code> with
   4 fractional digits.
</p><p>

   The integer in a <code class="code">width</co