The event format can be changed by reording the data elements. This is done using drag and drop operations. There are rules that enforce the order of data elements from the largest data types down to the smallest data types. Data elements that are of common size can be reordered amonst themseleves, regardless of their type(i.e. 4u1, 4s1 and 4f1). To enable/disable the enforcement of sorting rules, toggle the button.