module Rainbow
module Rainbow::Ext
module Rainbow::Ext::String
module Rainbow::Ext::String::InstanceMethods
module Rainbow::X11ColorNames
class Rainbow::Color
class Rainbow::Color::Indexed
class Rainbow::Color::Named
class Rainbow::Color::RGB
class Rainbow::Color::X11Named
class Rainbow::NullPresenter
class Rainbow::Presenter
class Rainbow::StringUtils
class Rainbow::Wrapper
class String
rainbow
3.1.1
# underline
def underline Rainbow(self).underline end