sentences:  Developments in earlier part of 2008, led to the introduction of the 'ghost character theory' at the NLA, which allows for computerised orthographic representation of Perso-Arabic script.This enables wider scope of editing with the option of switching between the languages such as Arabic, Balochi, Pashto, Persian, Punjabi, and Sindhi respectively.Along with the UZT keyboards, phonetic keyboards have been developed for Urdu.