LaoScript for Windows, a special set of utilities for Lao language (keyboard, conversion of encoding, sorting) etc. does provide a sorting utility integrated into a add-on for Word and Excel.
https://laoscript.net/In reply to Re^3: New Alphabet Sort Order
by silvain-dupertuis
in thread New Alphabet Sort Order
by Polyglot
| For: | Use: | ||
| & | & | ||
| < | < | ||
| > | > | ||
| [ | [ | ||
| ] | ] |