Std.Ui.Layout.Role

type

This declaration introduces a public type.

What it does

What a node means to someone who cannot see it.

Every role except Decoration and Group requires a name, and placement

refuses a tree that omits one, so an unlabeled control is a layout error

rather than a defect found later with a screen reader.

Read the signature

• This declaration has no value signature because it introduces a type or trait.