>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># create targets for a multi-zone problem. Here, each feature needs a total</span></span></span>
<span class="r-in"><span><span class="co"># of 10 units of habitat to be conserved among the three zones to be</span></span></span>
<span class="r-in"><span><span class="co"># considered adequately conserved</span></span></span>
<span class="r-in"><span><span class="va">targets</span> <span class="op">&lt;-</span> <span class="fu