Calligraphy
From Memory Alpha, the free Star Trek reference.
Calligraphy is the art of lettering, the creation of illustrations in the form of letters of an alphabet.
Keiko Ishikawa once told a story of her grandmother, or "Obachan" of when Keiko was 8, she used to help her Obachan create beautiful pictures of Japanese calligraphy. Keiko had forgotten the memory, but Tarmin from the Ullian delegation of telepaths helped her resurrect the forgotten memory. (TNG: "Violations")
