d work, for which you have or can give appropriate copyright permission.</p>
<p>Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode R"><code class="sourceCode r"><span id="cb6-1"><a href="#cb6-1" tabindex="-1"></a>a<span class="er">)</span> Disclaiming warranty or limiting liability differently 