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                                 L_ISTIME()


Syntax:        L_ISTIME(<expC>)


Purpose:       To determine if a character string is a valid and
               conforms to the format HH:MM:YY for absolute time or
               valid and conforms to the format for relative time of
               "xxxxH:MM:SS"


Arguments:     <expC> is the character string to be tested.


Returns:       A logical (.T.) if the time string is of format
               HH:MM:YY.
               A logical (.F.) is the time string is not of correct
               format.


Examples:      * Determine if valid times
               ? L_ISTIME("12:12:45")           && Result .T.
               ? L_ISTIME("2:12:45")            && Result .T.
               ? L_ISTIME("1224:12:45")         && Result .T.
               ? L_ISTIME("21:45")              && Result .F.


Language:      Clipper