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If you choose to retrieve old messages only, then you specify a time range in the text box. Only messages logged within that time range will be retrieved by the viewer. You may select a pre-defined time range, or enter one yourself in the format of "begin - end". You In addition to the standard mm/dd/yy hh:mm:ss format, you may also use several special phrases as shorthand. (e.g. 11/26/07 08:00 - 11/26/07 12:30, or current day - now, or current hour - current minute, or current day - current shift).
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