What is pass rule of Indian railway?

The pass rule of Indian Railways allows certain categories of individuals, such as railway employees, their family members, and certain government officials, to travel for free or at a discounted fare on trains. These passes are issued under specific conditions and are generally valid for a limited number of journeys within a specified time frame. The rules can vary based on the type of pass and the travel class. Additionally, specific documentation is required to obtain and use these passes.