KARACHI, Pakistan — With one national language, Urdu, four provincial tongues (Sindhi, Punjabi, Pashto and Balochi), and nearly 300 regional dialects, Pakistan’s linguistic diversity is like a beautiful carpet, interwoven with threads ancient and young. The regional languages developed over thousands of years, while Urdu came from northwestern India in the 12th century. Then, in 1947, English was made an official language as a legacy of British rule in India.
Now a small group of educators of the deaf intends to add one more language — this one not spoken. It is called Pakistan Sign Language, and its creators just may succeed in spreading its use across the country.