hello, May I know what does property pySLAAction mean?

its description says :"Service Level Agreement Action Time"

It's found that, after we reset case level SLA with below

@pxExecuteAnActivity(Primary,ActionChangeWorkSLAProps)

then the property pySLAAction is updated to current time.

Does it mean the time of the moment that case SLA level start (or restart) to count?

And, is it used for case level SLA only? Will it be used for other SLA, e.g. assignment SLA?

Thanks.