code: def parse(self, data, length, version=1):
          
          pos = data.tell()
          self.characterId = data.readUI16()
          self.depth = data.readUI16();
          self.matrix = data.readMATRIX();
          self.hasCharacter = True;
          self.hasMatrix = True;
          if data.tell() - pos < length:
              colorTransform = data.readCXFORM()
              self.hasColorTransform = True
docs: Parses this tag