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 Enables error handling and, when a run-time error occurs, directs your
 program to either branch to an error-handling routine or to resume
 execution.
 
    ON [LOCAL] ERROR {GOTO line | RESUME NEXT | GOTO 0}
 
    ■ LOCAL          Indicates an error-handling routine in the same
                     procedure; if omitted, module-level error handlers
                     are indicated
 
    ■ GOTO line      Branches to the first line of the error-handling
                     routine, specified by a label or line number; to
                     disable error handling, specify GOTO 0
 
    ■ RESUME NEXT    Resumes execution with the statement following the
                     statement that caused the run-time error; use the ERR
                     function to obtain the error code for the error
 
    ■ GOTO 0         Disables any enabled module-level error-handling
                     routine within the current module; if used with the
                     LOCAL keyword, disables any enabled error handler in
                     the current procedure
 
 See Also
    ◄ERL Function►                     ◄ERR Function►
    ◄ERROR$ Function►                  ◄Error/Event Trapping Summary►
    ◄LOCAL Keyword►