<p>The FAST diagram is working now with these rules:</p>

<p>1. There may be multiple High Order Functions.</p>

<p>2. # of High Order Functions will be same as # of Low Order Functions.</p>

<p>3. There can be multiple Basic Function under a High Order Function which leads to a relevant Low Order Function at the end.</p>

<p>4. In case of mutiple Basic Functions, Dependent Supporting Functions, and Independent Supporting Functions, they will be shown as stack.</p>

<p>&nbsp;</p>
