ᥛᥨᥝᥱ ᥓᥧᥰ:ISO 639 name/ISO 639 override/doc

This is the documentation page for ᥛᥨᥝᥱ ᥓᥧᥰ:ISO 639 name/ISO 639 override

This Lua module is used on many pages and changes may be widely noticed. Test changes in the module's /sandbox or /testcases subpages, or in your own module sandbox. Consider discussing changes on the talk page before implementing them.