Accents must be kept, even on capital letters.
Therefore you should write “Belle Époque” instead of “Belle Epoque”, “DÉTENTE” rather than “DETENTE” etc.
Note
You are strongly encouraged not to write long sections of text in capital letters, because they make reading tiresome.
notices/graphique-ergonomique/conserver-les-accents-sur-les-lettres-capitales.1370953418.txt.gz · Last modified: 11 June 2013 at 14:23 by Sébastien Delorme (Atalan)