Basically I don't care about the order of some of the data categories, but want the *Run summary data* to show up first. I don't want to hard-code all of the names and enforce an order, because then if there are new categories (or conditionally present categories) in the future we have to remember to add them to the order list. It's useful to have this as a parameter as it then allows us to override it in the case where we might care about the order of some conditionally present categories.