The sorting button in TabsFolders, allows you to sort your bookmarks by:
Bookmark name - The bookmark title.
URL - The browser URL for this bookmark.
Date modified - The date the bookmark was created / modified.
Browser tab Index - The order which the bookmarks / tabs will were saved from the browser window and the order you want them to open back in the browser window.
Folders first - Indicates that folders will be listed first.
Descending - Indicates Ascending (default) or descending sort.