History>Status column "+" and "*" meaning?

[Saltheart Foamfollower]

In the History>Status column what is the significance of the "+" and the "*" symbols after the "Reported: OK" status? These symbols only appear intermittently.

[fred]

In the History>Status column what is the significance of the "+" and the "*" symbols after the "Reported: OK" status? These symbols only appear intermittently.

Both are valid and are for diagnostic purposes only, you don't see any difference.
As of BOINC client  7.2.23 finished tasks are buffered in the BOINC client, allowing BoincTasks to use a very long (in time) History polling cycle.

* Detected by BoincTasks.
+ Missed by BoincTasks but retrieved from the BOINC client latest finished task buffer.