a-z a_-z_ letter 0-9 digit T negative sign . ( ) [ ; ] L quad diadic monadic + add plus - sub negate M mult sign P :- div recip | mod abs D min floor S max ceil * pwr exp O* log loge O circ pi times K. ! beta gamma ^ A and Q V or ^~ ~A nand Q~ V~ nor < lt > gt $ <= le & >= ge = eq F =| ne ~ not J null ? deal rand R rho rho I iota iota E epsilon N represent B base \O trans trans , cat ravel Y take U drop { <- assign |H |A grade up * G| V| grade down * / comp * /- comp op/ reduce * op/- reduce \ expand * O| rotate reverse * O- rotate reverse * may be subscripted with a scalar