Abstract: Plural types of register mark configurations are displayed in window W1, and a specified page layout pattern is displayed in window W2. A plurality of register mark candidate positions, which can be decided according to the page layout pattern, are also displayed in window W2. The operator selects one of the register mark configurations available and also selects a register mark candidate position to locate the register mark. The selected register mark will be located at the selected candidate position after rotation by the specified rotation angle.