applicable for several directives:</p>
<ul>
<li><strong>no scope</strong> + <strong>no scope</strong> =&gt; Two directives which don&#39;t require their own scope will use their parent&#39;s scope</li>
<li><strong>child scope</strong> + <strong>no scope</strong> =&gt;  Both directives will share one single child scope</li>
<li><strong>child scope</strong> + <strong>child scope</strong> =&gt;  Both directives will share one single child scope</li>
<li><strong>isolated scope</strong> + <strong>no scope</stron