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 BASE/1001    Undefined function

     Explanation:  You specified a function or procedure that:

     1. You did not link into the current program.

     2. You never directly referred to in the program.

     Action:  Make sure you linked the specified function or procedure.
     If you referred to the routine in an index key or macro expression, add
     an EXTERN statement to one of your program files (.prg) for each routine
     that was not linked.

     See Also:  Basic Concepts chapter in the Programming and Utilities
     guide