This is an old revision of the document!
The biggest issue is the default text-orientation of common symbols and punctuation, so here's a table to start figuring it all out. :)
Orientation Codes:
Name Codepoint Char CSSWG Unicode AH Ja Fonts Zh FontsNotes
Exclamation Mark U+0021 ! S ? ? ? ? Has fullwidth variant Middle Dot U+00B7 ⋅ * ? ? ? ? Sideways in Japanese, Upright in Chinese
[1] U if lang=zh
, else S