bidi-override

Dear CSS Validator Team,

Thanks for your great work on this project.

I suspect I've found a minor bug. When attempting to validate the css
for my website

http://webspace.qmul.ac.uk/pdelbourne/index.html

I get an error message saying that bidi-override is not a value for
unicode-bidi. But it is. Right?

Best wishes,
Paul Elbourne

-- 
Dr Paul Elbourne
Reader in Semantics
Queen Mary, University of London

http://webspace.qmul.ac.uk/pdelbourne/index.html