cursive/src/theme/effect.rs

enum_set_type! {
    /// Text effect
    pub enum Effect {
        /// No effect
        Simple,
        /// Reverses foreground and background colors
        Reverse,
        /// Prints foreground in bold
        Bold,
        /// Prints foreground in italic
        Italic,
        /// Prints foreground with underline
        Underline,
    }
}