GLOBAL vs global keyword
<p>I'm studying a MATLAB code in which I found this:</p>

<pre><code>GLOBAL = eye(4,4);
</code></pre>

<p>what is <code>GLOBAL</code>? Is it a global variable? Documentation says that global variables are declared in this way:</p>

<pre><code>global x1 = 4;
</code></pre>

<p>What are the differences between <code>GLOBAL</code> and <code>global</code>?</p>