Controller

A controller enabling a display screen to be split into a plurality of split regions, the controller comprising a processor configured to:

• display a display-info-type selection screen displaying, for each of the plurality of split regions, as a list, a first displaying and a second displaying in association, the first displaying enabling visual specification of a position of the corresponding split region on the display screen, the second displaying indicating a list of information types displayable in the split region;
• receive a selection operation by an operator to an information type included in the second displaying,
• designate a split pattern to the display screen and select the information type to be displayed in the split region, based on the selection operation;
• and
• split the display screen into a plurality of split regions and display information according to a predetermined information type in each of the plurality of split regions, based on the designation of the split pattern and the selection of the information type,
• wherein the information type included in the second displaying is alternatively selectable in the second displaying, and
• in response to the split pattern belonging to the split region corresponding to the second displaying including the information type selected by the operator being different from a split pattern currently displayed, change the designated split pattern of the display screen to the split pattern that the split region on the operator's selection belongs to.