Formatting and mode-changing marks are: As in English Braille, the capital sign is doubled for all caps.
The symbol marker combines with a following initial letter to produce the following: The currency marker combines with a following initial for: It is also used in comic strips: The traditional system of digits is to add the number sign ⠼ in front of the letters of the first decade (a–j), with ⠼⠁ being ⟨1⟩ and ⠼⠚ being ⟨0⟩.
The Antoine numbers are being promoted in France and Luxembourg, but are not much used with French Braille in Quebec.
Indeed, a principal difference of these alphabets is the remapping of French vowels with a grave accent (à è ì ò ù) to an acute accent (á é í ó ú), as the French alphabet does not support acute accents apart from é. Spanish changes all five of these vowels, as well as taking ü. Portuguese Braille is also very similar to the French, though the shift of grave to acute accents necessitated a chain of other changes, such as circumflex to grave, and the Portuguese tildes were taken from French diaereses (Portuguese ã õ for French ä ö/œ).
The continental Scandinavian languages took the extended French letters â (for å), ä/æ, and ö/ø.