code: def _load(self, element, commentchar):
          
          for child in element:            
              if "id" in child.attrib:
                  tline = TemplateLine(child, self, commentchar)
                  self.order.append(tline.identifier)
                  self.lines[tline.identifier] = tline
              else:
                  msg.warn("no id element in {}. Ignored. (group._load)".format(child))
docs: Loads all the child line elements from the XML group element.