The last option lets you choose whether you want to ' Save immediately' or ' Put to the head/tail of the processing queue'.
You can select the name and location for the output file (RawTherapee will automatically add the extension based on the chosen format), choose the output file format and bit depth, set the compression level, choose whether you want the processing profile saved alongside the output image, etc. This works as a standard 'Save As' dialog. In the Editor tab, if you click on the little hard disk icon at the bottom-left of the preview image, or hit the ^ Ctrl + s shortcut, you can ' Save immediately'. There are several ways of saving an image from the Image Editor tab: Your original raw file will never be altered by RawTherapee.
