<h3>lower() function</h3>
Converts a string to lower case letters.

<p><h4>  Syntax</h4>
     lower(<i>string</i>)</p>

<p><h4>  Arguments</h4>
<i>  string</i> &rarr; is string.  The String to convert to lower case.</p>

<p><h4>  Example</h4>
     lower('HELLO World') &rarr; 'hello world'</p>
