Conversations by characters in plural channels are displayed, and of these conversations, the conversation in the main channel and conversations in other channels are displayed in individual regions 23, 24 on one display screen, and an inputted statement is displayed in an intermediate region 22 of the individual regions 23, 24. On a liquid-crystal-side surface of one substrate out of a pair of substrates which are arranged to face each other by way of liquid crystal, signal lines, an insulation film covering the signal lines, terminal portions having one portions of the signal lines exposed by forming holes in the insulation film, and conductive oxide films laminated to the terminal portions are formed. The work is horizontally moved through this conveyer and the rail and is washed and dried by utilizing the union of each reservoir lower portion and each reservoir upper portion. The controller classifies the entered sticky notes on the basis of the action to be performed on them. The corresponding users of the subgroup possess knowledge related to the query term.