https://rdrr.io/pkg/shiny/man/sidebarLayout.html" class="external-link">sidebarPanel</a></span><span class="op">(</span></span></span>
<span class="r-in"><span>      <span class="fu"><a href="https://rdrr.io/pkg/shiny/man/textInput.html" class="external-link">textInput</a></span><span class="op">(</span><span class="st">"selection"</span>, <span class="st">"Selection"</span>, <span class="st">"1-20"</span><span class="op">)</span>,</span></span>
<span class="r-in"><span>      <span class="fu"><a href="https