eak tab</a>
which allows you to change disabled or hidden fields, and will allow you to bypass 
client side validation (often enforced using javascript).<br/>
It is an essential penetration testing technique. 
</p>
<p>
You can set a 'global' breakpoint on requests or responses using the buttons on the
<a href="../../ui/tltoolbar.html">top level toolbar</a>.<br/>
All requests or responses will then be intercepted by ZAP allowing you to change anything before
allowing the request or response to continue. 
</p