OpenOffice3.org Calc 3. Information Functions
ISERR(value) Function
Returns a logical value. The function
returns TRUE if the cell indicated by “value” contains a different error value
#N/A. The argument “value” contains the reference to the cell yo want to
evaluate. If “value” contains the error code #N/A or if you have information
that is not an error, the function returns FALSE
=ISERR(A1) Returns TRUE if the cell A1 contains an error code other than #N/A..