This DisplayString records the timestamp at which the fscan agent began scanning its target file. An admin uses it to know how long the current scan session has been running when interpreting the accompanying length, lengthrate, and match-count statistics, since a recently restarted scan will have accumulated far fewer matches than a long-running one. For example, comparing stime against the current time lets an admin tell whether a low total match count reflects a genuinely quiet log or simply a scan that just started.