e></td><td>$ds[$key] = $val</td></tr><tr><td><code class="mendoza-code">puti</code></td><td><code class="mendoza-code">(puti ds index val)</code></td><td>$ds[index] = $val</td></tr><tr><td><code class="mendoza-code">rem</code></td><td><code class="mendoza-code">(rem dest lhs rhs)</code></td><td>$dest = $lhs % $rhs</td></tr><tr><td><code class="mendoza-code">res</code></td><td><code class="mendoza-code">(res dest fiber val)</code></td><td>$dest = resume $fiber with $val</td></tr><tr><td><code class="mendoza-