The invention relates to a method for making of paper, tissue, board or the like by using recycled fibre material as a raw material. Hydraulic fluid from a remotely operated vehicle provides hydraulic fluid that selectively flows through the valve for operating a tool that handles the plug. The cap comprises a base surface configured to provide a base for a coupled container; a flip-open lid positioned to enable access to an interior of a coupled container; a first cavity having a floor defined by a portion of the cap and a sidewall defined by a portion of the cap; and a drainage port sized to enable water to drain from the first cavity. Besides impurities including moisture or the like exiting in the oxide semiconductor film, heat treatment causes reduction of impurities including moisture or the like exiting in a gate insulating layer and those in interfaces between the oxide semiconductor film and films which are provided over and below the oxide semiconductor and in contact therewith.