1.0: Settings - catalog - purge data & thumbnails

[masterjp]

I often optimize my catalog file to get the best performance.
Today I tested purge all thumbnails (=clean all thumbnails from database) and purge file data (=clean meta data from files?).
I do not see any difference between both functions. Both clean up my database from thumbnails and file informations.

XnViewMP1_purge_data.png

[xnview]

'Purge all thumbnails' remove thumbnails from database
'Purge file data' remove file informations from database, in this case thumbnail will be invalid too