class text :Inheritsunit ->object..end
method clear : unit
method fmt : Format.formatterprintf method.method printf : 'a. ('a, Format.formatter, unit) Pervasives.format -> 'afmt) recognizes the following tags:"bf" bold face"it" italic style"ul" underlined"st" striked through"red", "orange", "green" foreground color"fg:<color name>" foreground color"bg:<color name>" background color"link:<link name>" clickable link, see method on_link."mark:<mark name>" named text range, see methods show, set_properties.set_tag_properties.
t#printf is a shortcut for Format.fprintf t#fmt.
method highlight : mark:string -> GText.tag_property list -> unit
method focus : mark:string -> unit
method on_link : (string -> unit) -> unit