> A transient event marks events that should not be recorded, since they are only relevant as signals or markers for other code, and not as important events meaningful to users. For example, several actions have both a *start* and an *end* event, but to users only the completion of that action is relevant, so the starting event should most of the time not be recorded. Another use case is for large actions that also trigger many sub-events, but the whole context should be ignored, as is the case with XAR imports or wiki upgrades, where many changes occur during the import/upgrade, but the only relevant action is the whole import or upgrade. In this case, the whole observation context can be marked as transient and ignored.