cked><label for="merge-as-points">Merge as track points</label><br>
                    <input type="radio" id="merge-as-segments" name="merge-structure"><label for="merge-as-segments">Merge as track segments</label><br>
                    <input type="radio" id="merge-as-tracks" name="merge-structure"><label for="merge-as-tracks">Merge as tracks</label>
                </div>
            </div>
        </div>
        <div id="split-content" class="popup-content">
            Choose how to split the trace<