A Y selection line for write for controlling operations of a column selection switch within a write amplifier and a Y selection line for read for controlling operations of a column selection switch within a read amplifier are provided individually and the column selection switch within the read amplifier is set to the non-operating condition during the write operation. A transmission block of extreme thinness has highly reflective coatings on opposed parallel surfaces. The system receives editing input from the user for an editable component, and then updates the component based on the editing input.