Work with Folders
All image files are organized in folders, and every folder corresponds to an actual folder on disk. Actions that you perform on folders within Picasa affect the folders on disk, too. As such, you can modify any image folder and its contents from within Picasa or by doing so in Windows.
Most folder commands can be chosen from a menu, by clicking the folder's Actions button, or by right-clicking the folder name in the Folder List (or almost anywhere else within the folder's area in the Lightbox).
Folder menu
Actions button
Right-clicking within a folder
Changes made ...
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