how to search for images that have no description?

[bernd]

Hi,

I'm using an external application to prepare descriptions and keywords for the images. The application exports a text file which I can successfully import with a plugin from Jan. I now want to search for all images they I might have missed or for some other reason don't have a description. Is there some special code (like "is null" or whatever) I can put into the search box so that I get shown all images without a description or is there a different solution to achieve that?

Any ideas are welcome!

thnx and cheers,
Bernd