html" class="external-link">legend</a></span><span class="op">(</span><span class="st">"bottomleft"</span>, <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"data"</span>, <span class="st">"fit"</span><span class="op">)</span>, lty <span class="op">=</span> <span class="fl">1</span>, col <span class="op">=</span> <span class="fl">1</span><span class="op">:</span><span class="fl">2</span>, bg <span class="op">=</span> <span c