Save AlwaysAll selected files will be saved whether they are modified or not. This is useful when changing audio settings and you want to force a save.
Save Freeing Space if ModifiedSelected and modified files will be saved. Free space will be reclaimed to the Padding value on the Settings-Audio panel. Note that this does not require that the Remove free space option be set.
Save Always Freeing Space if ModifiedAll selected files will be saved whether they are modified or not. Free space will be reclaimed as described above.
Completely Remove All TagsIf confirmed, all tags in the selected files will be completely removed. The editing state is updated before clearing the tags so you can do an Edit>Update Editing State to restore the tags even after the save takes place. Tags which have been configured to be written each time a file is saved will not be written. Note that for all audio formats with the exception of MPEG-4, OGG and Opus, the object encapsulating the tags is removed. In FLAC/OGG/Opus files the vendor identification (typically mapped to Encode BY) is removed (FLAC) or emptied (OGG/Opus). In MPEG-4 files, free space in the tagging area greater than the free space padding setting will be removed.It is possible to have an action run automatically when you save files. See Automatically Running an Action When Saving Files for more information.