an class="st">"grey"</span>, lty<span class="op">=</span><span class="st">"dashed"</span>, a<span class="op">=</span><span class="fl">0</span>, b<span class="op">=</span><span class="fl">1</span><span class="op">)</span>;</span></span>
<span class="r-in"><span><span class="fu">graphics</span><span class="fu">::</span><span class="fu"><a href="https://rdrr.io/r/graphics/legend.html" class="external-link">legend</a></span><span class="op">(</span><span class="st">"topleft"</span>,</span></span>
<span class="r