namespace System { 
    /// <summary>Represents an escape sequence.</summary>
    public enum EscapeSequence {
        /// <summary>Represents no escape sequence.</summary>
        None = 0,
        /// <summary>Represents the escape sequence.(<c>\'</c>)</summary>
        SingleQuote = 1,
        /// <summary>Represents the escape sequence.(<c>\"</c>)</summary>
        DoubleQuote = 2,
        /// <summary>Represents the escape sequence.(<c>\\</c>)</summary>
        BackSlash = 3,
        /// <summary>Represents the escape sequence.(<c>\0</c>)</summary>
        Null = 4,
        /// <summary>Represents the escape sequence.(<c>\a</c>)</summary>
        Alert = 5,
        /// <summary>Represents the escape sequence.(<c>\b</c>)</summary>
        Backspace = 6,
        /// <summary>Represents the escape sequence.(<c>\f</c>)</summary>
        FormFeed = 7,
        /// <summary>Represents the escape sequence.(<c>\n</c>)</summary>
        NewLine = 8,
        /// <summary>Represents the escape sequence.(<c>\r</c>)</summary>
        CarriageReturn = 9,
        /// <summary>Represents the escape sequence.(<c>\t</c>)</summary>
        HorizontalTab = 10,
        /// <summary>Represents the escape sequence.(<c>\v</c>)</summary>
        VerticalTab = 11
    }
}