Decorate the reveal list

You can add some special elements to the reveal list that are not exactly a "revealed" item from the underlying Prefab, but rather, their purpose is to make the reveal list more understandable.

There are three types of elements of this kind: Headers, Comments and Separators, and they can be added by just clicking the + button on the reveal list:

Header

Creates a bold label, very much like the [Header] attribute does. However, this is independent from any property so it can be moved anywhere in the reveal list, to create grouping.

Comment

Creates an Help Box (i.e. the box with the little balloon icon on the left, and a text message) with the comment inside it.

Separator

Adds an horizontal line, meant to create separation.

The decoration items are meant to be used in Reveal lists that are not grouped by GameObject. Since decoration items have no GameObject associated to them, they don't make sense in a GameObject-ordered list.

So you might want to turn Group By GameObject to off for the Reveal list that contains them.