Thanks for the quick answer I find the structure quite elegant I said and co because I went through the complete structure of templates behind but SubatomicParticle Strange AntiB0 shows and gives html code B 0 s that is read B0s by a text browser like lynx the anti information disappears but I don t know exactly how browsers for blind people work Actually I think no automatic acessibility software would detect that but the French accessibility project sounded sensitive to the use of and