| Fit (Customize) | !. | 
| This conjunction modifies certain verbs in ways prescribed 
in their definitions.  For example, =!.t is the relation of 
equality using tolerance t , and ^!.r 
is the factorial function so defined that x ^!.r n 
is */x + r * i. n . Consequently, ^!._1 
is the falling factorial function. | 
| < <: > >: +. *. -. -: | E. i. i: |  Tolerance | 
| <. >. * ~. | Tolerance  | 
| #: |  Tolerance | 
| = ~: #: e. | Tolerance  Tolerance | 
| ^ p. |  Stope function and polynomial based thereon | 
| $ |. , ,. ,: # {. |  Fill | 
| ": | Print precision  |