A function block allows a multiplier and a multi-input multiplexer to be realized with a small number of blocks. Business process design discussions and brainstorming details from a mind mapping tool can be captured, and key nodes that are relevant for case management can be identified in a mind mapping diagram. The first node wirelessly transmits the recorded local time to at least a second node. The application part is adapted to be brought into releasable engagement with a displacement part which is suitable for handling by a user. The ROI detection unit divides the edge image into a plurality of regions, compares a total sum of edge component values of an edge line included in each of the regions and a predetermined threshold value by regions, and detects a region, in which the total sum of edge component values is greater than the threshold value, as the ROI from among the plurality of regions. A retention member can be used to retain the power group assembly to the valve group assembly.