Tools - Settings - View - File/folder list -
Under "Tools → Settings → View → File/folder list" in the tab "Sorting" the following settings are offered.
One of the following types of string sorting can be chosen:
Natural sorting option active Natural sorting option inactive
Sort folders always by name
If this setting is checked, folders are always sorted by name, independently of the chosen sorting.
Folders at the end of the list
If this setting is checked, folders are always shown at the end of a list of files (if any) and sorted there separately.
Folders like files
If this setting is checked, folders are not sorted separately from files (either at the top or bottom of the list), but alphabetically among the files.
Folders like files - expect for name
If this setting is checked, folders are sorted like files (except when sorting by name).
Sort by extension - folders too
If this setting is checked, any folder whose name contains a dot (.) is sorted like a file. Characters after the dot are treated as the folder's extension.
Shadow sorted column
If this setting is checked, the sort column is shaded. However if the background color is very light, the shading may be hard to distinguish.
Sort by the same column in all tabs of the panel
If this setting is checked, the chosen sort column applies to all folder tabs in the same panel.