I have Bridge 2024. I have several questions about thumbnails and previews. The Adobe documentation I have found is vague. Questions: 1) What specifically is the difference between a thumbnail and a preview? 2) When and where are they used, and how? 3) When are they generated, and where are they stored? 4) Is there a way to tell Bridge to keep thumbnails FOREVER [I don't care about disk space.] My problem is going to a folder with many -large- images, having generated the thumbnails at one time in the past, and finding myself sitting for a -long- time while Bridge slowly regenerates and displays the thumbnails. This makes revisiting older image folders very tedious.