escape code Constants in C++
<p>My instructor gave us some sample code and she used a <code>\a1</code> <code>\a2</code> <code>\a3</code> <code>\a4</code> <code>\a5</code>
Can someone tell me what it is used for? I can't find it online or in my textbook?</p>

<pre><code>cout&lt;&lt;"\n\t\a\a1----INSERT A NODE IN A BINARY TREE.\a\a";
cout&lt;&lt;"\n\t\a\a2----PRE-ORDER TRAVERSAL.\a\a";
cout&lt;&lt;"\n\t\a\a3----IN-ORDER TRAVERSAL.\a\a";
cout&lt;&lt;"\n\t\a\a4----POST-ORDER TRAVERSAL.\a\a";
cout&lt;&lt;"\n\t\a\a5----EXIT.\a\a";
cout&lt;&lt;"\n\t\a\aENTER CHOICE::\a\a";
</code></pre>
