ss="fu"><a href="https://rdrr.io/pkg/shiny/man/actionButton.html" class="external-link">actionButton</a></span><span class="op">(</span><span class="st">"add"</span>, <span class="st">"Add"</span><span class="op">)</span>,</span></span>
<span class="r-in"><span>      <span class="fu"><a href="https://rdrr.io/pkg/shiny/man/actionButton.html" class="external-link">actionButton</a></span><span class="op">(</span><span class="st">"remove"</span>, <span class="st">"Remove"</span><span class="op">)</span></span><