Sao Tome and Principe Sign Language
Sao Tome and Principe Sign Language is a sign language spoken in São Tomé & Príncipe.
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Sign languages are full natural languages with their own grammar, unrelated to the spoken languages around them.
São Tomé and Príncipe Sign Language (LGSTP) is an emerging village sign language of the island state of São Tomé and Príncipe, and around 500 signs have been recorded so far. There exist no interpreters, no official training or media for LGSTP.
Some reports have said that LGSTP is similar to Portuguese Sign and that much of it is mutually intelligible with Portuguese Sign.
From Wikipedia · São Tomé and Príncipe Sign Language · CC BY-SA 4.0