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Fix | m f. u f. |

If`x` is a proverb, then`y=: x f.` is equivalent to it, except that any names that occur in the definition of`x` are (recursively) replaced by their referents. Consequently, any subsequent change in these referents that might change the definition of`x` will not affect the definition of`y` .
If`x` is the name of any entity (that is, a pronoun, proverb, pro-adverb, or pro-conjunction), then`'x' f.` is equivalent, but with all names in its definition recursively replaced by their referents.
`x f.` will not fix any part of`x` that contains`$:` .

For example:

       sum=: +/
       mean=: sum % #
       norm=: - mean
       norm a=: 2 3 4 5
    _1.5 _0.5 0.5 1.5

       N=: norm f.
       N a
    _1.5 _0.5 0.5 1.5

       norm
    - mean

       N
    - (+/ % #)

       sum=: -/
       norm a
    2.5 3.5 4.5 5.5

       N a
    _1.5 _0.5 0.5 1.5

       adv=: norm@
       *: adv
    norm@*:
       adv
    norm@

       'adv' f.
    (- (-/ % #))@

       'a' f.
    2 3 4 5

>> << Ndx Usr Pri Phr Dic Rel Voc !: wd Help Dictionary