The product enhanced XenForo custom field system to allow sorting of options for applicable custom field types (dropdown, radio, checkbox etc.).
The product allows manual sorting by drag-n-drop, as well as provides controls to quickly sort the entire list alphabetically in ascending and descending orders. Sorting by option ID as well as option value is possible.
In modern browsers supporting "localeCompare" function the sorting takes into account locale and supports different language code characters. In older browser simpler comparison is done but should support most of Unicode characters.
The enhancement applies automatically to User fields, Thread fields and any other custom field system that uses the same framework (e.g. resource fields).