Toggle Vertical - Switches the program interface to a horizontal layout. Select it again to return to vertical mode.
Below is a screenshot of the program in horizontal layout:
Sort by Filename - This is the default sorting order of images in the list.
Sort by Preset - Sorts the images in the list by the preset name used. This can be helpful if you manually change presets on some images or if you’re using a customized version of the program where presets are assigned upon file opening based on filenames or file EXIF information. See the Customised Workflow topic for more details.