**18.UNDEF**

Purpose:Command removes the the user-defined functions.

Status:Implemented

Syntax:

    undef [function_name]
    undef all

Comments:

all flag removes all the user defined functions.

Example:

     gnucap>undef max    Removes the ''max'' function
     gnucap>unalias all   Removes all function definitions
     are you sure you want to remove all function definitions?y/n:y
     all functions removed.
     gnucap>