Waar vind ik in LRC het dialoogvenster voorkeuren, om de integriteit van de catalogus te testen?

Thank you very much. I have found it

I want to test the integrity of the LRC catalog.

I’m stuck with the Adobe description.

Where can I find the Preferences dialog? It should be accessible BEFORE starting ALVORENS LRC.

See https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-corrupt-catalog.html

1. Press and hold the Alt (Win) / option (macOS) key while launching Lightroom Classic. In the Select Catalog dialog box, select the catalog which is corrupt and check Test integrity of this catalog option.

   

Test integrity of the catalog appears when you do a backup of the catalog file from within LrC. Then it is a check box on the backup dialog box.