Selecting one of them will change the destination file to the selected directory keeping the file name - MKVToolNix GUI: multiplexer (preferences): the ten most recently used values for the 'relative output directory' and 'fixed output directory' settings are now saved.
Clicking it shows a menu with the ten most recently used output directories. Implements #2458 - MKVToolNix GUI: multiplexer: a new button was added next to the 'destination file' controls.
New features and enhancements: - mkvextract: WAV extractor: mkvextract will now write W64 files instead of WAV files if the file name extension is `.w64` or if the final file size is bigger than 4 GB, the file size limit for WAV files.
