code: def load_elements(self, elements):
          "Initialize the internal element structures"
          self.pg_no = 0
          self.elements = elements
          self.keys = [v['name'].lower() for v in self.elementsf load_elements(self, elements):
          "Initialize the internal element structures"
          self.pg_no = 0
          self.elements = elements
          self.keys = [v['name'].lower() for v in self.elements]
docs: Initialize the internal element structures