This is a basic question but I haven't found any answer yet :/
Available appearances for Button[] are mentioned in Help, those are "Palette", "FramedPalette", "DialogBox" and so on. But is this all? How could I get to know?
For example there is also used in Help "NoOp" option in MouseAppearance[].
Are there any others in addition to those mentioned in Help.
Is there somewhere more info about styles but for different functions too?