N> Small bumps oN certaiN keycaps to help touch-typists fiNd the home keys (ASDF aNd JKL ) without lookiNg. They are Nearly always oN the "F" aNd "J" of a QWERTY aNd the "5" of a Numeric keypad. The MaciNtosh, perverse as usual, has them oN the "D" aNd "K" keys. This term is based oN the verNacular AmericaN expressioN "as useful as tits oN a boar" (or boar-hog, bull, bullfrog, or maNy other variaNts), meaNiNg "Not useful". [JargoN File] (1998-02-25)
