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It is very close to French Braille: it uses the 26 letters of the basic braille alphabet, plus several additional letters for ç and what are, in print, vowel letters with diacritics; these differ from their French values only in the need to accommodate the Catalan acute accent: ú, ó, í for what are in French Braille ù, œ, ì :
The middot is used to distinguish double-el ⟨l·l⟩, ⠇⠐⠇, from the digraph ⟨ll⟩, ⠇⠇.
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Formatting
(digit)
(caps)
The capital sign needs to be repeated for each letter of an initialism, so ACIC is ⠨⠁⠨⠉⠨⠊⠨⠉.
See also
Abecedari Braille de 1931, a 1931 alphabet with different letter assignments and punctuation, including dropped digits for ordinal numbers.
Alfabet Braille, a chart from the Associació Catalana per a la Integració del Cec with some dubious letter assignments, such as the loss of a distinct acute accent and the use of the colon for ⟨ï⟩.
References
According to Catalan Misplaced Pages. This is the reverse of what would be expected from international norms.
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