The Catalan manual alphabet is used in Catalan Sign Language but was not officially recognized as one of Catalonia's official languages until 3 June 2010 when Law 17/2010 of the Catalan sign language (LSC) was approved by the government.

[3] As a result, people who use Spanish Sign Language can understand approximately up to 80% of the Catalan sign language.

[4] ^b Denotes the number (if known) of languages within the family.

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