False writing system

False writing systems are artificially constructed alphabets or scripts used (sometimes within the context of a false document) to convey a degree of concealed verisimilitude. Examples of this include the script in the Codex Seraphinianus and the Voynich manuscript and alien dialogue in comic strips and graphic novels (such as Alan Moore's The League of Extraordinary Gentlemen, and the Valerian[?] series).

See also: fictional language