Punjab, Pakistan
The major and native language spoken in the Punjab is Punjabi (which is written in a Shahmukhi script in Pakistan) and Punjabis comprise the largest ethnic group in country. Punjabi is the provincial language of Punjab, but is not given any official recognition in the Constitution of Pakistan at the national level.
Punjabi language
Punjabi is unusual among Indo-European languages in its use of lexical tone (that is, the way in which the pitch of the voice conveys meaning). The Punjabi language is written in one of two alphabets: Shahmukhi or Gurmukhi. In the Punjab, both writing systems are used (a rare occurrence called synchronic digraphia): Shahmukhi is used mainly by Punjabi Muslims, and Gurmukhi is used mainly by Punjabi Sikhs and Hindus.