<!-- Data input area (manual entry). -->
<div class="my-4">
  <label class="form-label" for="data_area">Enter manually</label>
  <textarea id="data_area" class="form-control" rows="3" wrap="off"></textarea>
  <div>
    <small id="data_area_warn" class="form-text text-primary shiny-html-output"></small>
  </div>
  <button id="data_bulk" type="button" class="btn btn-outline-primary btn-sm action-button mt-3">
    <span class="glyphicon glyphicon-plus"></span> Add
  </button>
</div>
