How to save IPTC category-list/tree?

[BSPicture]

Hi,

I have built a large list (tree) of IPTC-categoriies (which is displayed on the left side of the XNView screen, near the thumbnail-previews).
How can I save this list? Where it is stored?
Thanks in advance for feedback.

regards

Eric

XNView Version 2.49.3 (Windows 10)

[xnview]

it is stored in category.db

[michel038]

With XnViewMP, you can import this category.db (Tools>Settings>Catalog>Tools>Import XnView category.db)

Then, you'll be able to export categories in a standard TXT format (drop down menu in categories pane of XnViewMP )