I have a dynamic album that displays images from several other albums. I'd like to sort this album by album title and image description: Album A img1, Album A img2, Album A img3, Album B img1, Album B img 2, Album B img3, etc.

What would be the correct info to enter into the custom sort box?

Thank you for your help.

Sorry, the keys for the custom sort of images are constrained to the fields of the images table. So you cannot include the album title. You could perhaps try using albumid. This would at least keep images from one album together.

Thanks. Albumid,desc works well enough for what I want.