</a></span><span class="op">(</span><span class="va">file</span>, <span class="st">"testattrib"</span><span class="op">)</span> <span class="op">&lt;-</span> <span class="va">LETTERS</span><span class="op">[</span><span class="fl">1</span><span class="op">:</span><span class="fl">10</span><span class="op">]</span></span></span>
<span class="r-in"><span><span class="va">file</span><span class="op">$</span><span class="fu">create_group</span><span class="op">(</span><span class="st">"testgroup"</span><span cl