The style declarations contained within this page:
P:lang(en) {color: green;}
P:lang(de) {color: purple;}
This paragraph should NOT be any color except black.
[en] This paragraph has been marked English, and should be green.
[de] This paragraph has been marked Deutsch, despite the fact that it clearly is English, and should be purple.
[de-ch] This paragraph has been marked as Swiss German, despite the fact that it clearly is English, and should be purple.