code: function(items) {
              var n = items.length - 1;
              for(var i = 0; i < n; i++) {
                  if(items[i].relativePosition == items[i + 1].relativePosition) {
                      items[i].label = items[i].label + '<span class="timeline-me-same-position">' + items[i + 1].label + '</span>';
                      items[i].shortContent = items[i].shortContent + '<span class="timeline-me-same-position">' + items[i + 1].shortContent + '</span>';
                      items[i].fullContent = items[i].fullContent + '<span class="timeline-me-same-position">' + items[i + 1].fullContent + '</span>';
                      items.splice(i + 1, 1);
                      n--;
                  }
              }
          }
docs: Method that merges items with same relativePosition !!! When 2 (or more) items have the same relativePosition, only the first item's type & picto will be taken into account !!!