in string, capitalize allcaps words and leave the rest alone
<p>For example, having gone through this procedure the string:</p>

<pre><code>Hello, WORLD, McGisty, you are my HERO THAT I am.
</code></pre>

<p>should return/be:</p>

<pre><code>Hello, World, McGisty, you are my Hero That I am.
</code></pre>

<p>Thanks!</p>
