="fl">4</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">Abt</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>                 b</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1,] 2 1.0 -1.0 8</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [2,] 0 0.5  0.5 1</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [3,] 0 0.0 -1.0 1</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span 