Word description Defines a word with named inputs. The word binds its input values to lexical variables from left to right, then executes the body with those bindings in scope.
If any var name is followed by an exclamation point ( ! ), the corresponding new variable is made mutable. See Mutable lexical variables for more information.
Notes The names of the outputs do not affect the word's behavior. However, the compiler verifies that the stack effect accurately represents the number of outputs as with : definitions.