Languages of Catalonia
According to the official government of Catalonia, Catalan is the second most spoken language of the region, after Spanish (over 35% of Catalans use exclusively Catalan as their first language, while 11% of Catalans use equally both Catalan and Spanish). It is the most spoken language in many comarques of Catalonia, with the exception of the Barcelona metropolitan area (Barcelonès plus surrounding comarques) and Camp de Tarragona. Catalan is a compulsory subject in schools and enjoys equals rights with Spanish throughout Catalonia.
Catalan manual alphabet
The Catalan manual alphabet is used in Catalan Sign Language but wasn't 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. The Catalan manual alphabet is single-handed and is extremely similar to the Spanish manual alphabet. As a result, people who use Spanish Sign Language can understand approximately up to 80% of the Catalan sign language.