This counter counts pages flushed out to the VMS page file, tracked within the periodically-refreshed Page statistics group. A rising trend here, tracked against the free-page count in the same group, helps an admin correlate memory reclamation activity with free-memory depletion. For example, if this counter surges right as the amount of free memory reported elsewhere in the group drops toward zero, it confirms the system is actively swapping pages out to compensate for the shortage.