(gawk) User-defined

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 User-defined Functions
 **********************
 
    Complicated `awk' programs can often be simplified by defining your
 own functions.  User-defined functions can be called just like built-in
 ones ( Function Calls), but it is up to you to define them--to
 tell `awk' what they should do.
 

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* Definition Syntax           How to write definitions and what they mean.
* Function Example            An example function definition and what it
                                 does.
* Function Caveats            Things to watch out for.
* Return Statement            Specifying the value a function returns.
 

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