<!DOCTYPE html> <html> <!-- mixed languages in a word should inhibit automatic hyphenation --> <body lang="en-us"> <div style="width: 5em; hyphens: auto; font-family:sans-serif;"> supercalifragilisticexpialidocious super<span lang="foo">cali</span>fragilisticexpialidocious supercalifragilisticexpialidocious </div> </body> </html>