Function setup 

fn setup() -> Value

The phone’s tab, Settings ▸ This phone ▸ On your computers (PhoneMessagesSetup.qml): {android, sharing (a sharing folder is set), part, apps}, each a row as SettingRow.qml shows it ({key, kind, label, help, value, choices}): the part’s switch here, then each app seen lately, the SMS app first, then by name.