with standard names, like <code>A</code> for a matrix.</p>
<p>Another exception to the lowercasing recommendation, which follows the C/C++ conventions, is for size constants, for which the recommended form is a single uppercase letter. The reason for this is that it allows the loop variables to match. So loops over the indices of an <span class="math inline">\(M \times N\)</span> matrix <span class="math inline">\(a\)</span> would look as follows.</p>
<div class="sourceCode" id="cb3"><pre class="sourceCode 