The evolution of state protections under Article 371, and what 371K could mean for Ladakh

The Centre has proposed inserting a new Article 371K in the Constitution to provide special safeguards for Ladakh. Why does Article 371 exist in so many different forms? And what would make a possible 371K for Ladakh different from the provisions that already exist?The Union government has proposed inserting a new Article 371K in the Constitution to provide special Constitutional safeguards for Ladakh.