The document discusses the high level structure (HLS) followed in major management system standards like ISO 45001, ISO 9001, ISO 14001, and IATF 16949. The HLS ensures that all management system standards have the same high-level structure, core text, and identical terms and definitions, making it less complex for organizations to implement multiple management systems. The document then outlines the 10 clauses in the HLS - including scope, leadership, planning, support, operation, performance evaluation, and improvement. It provides a brief description of the purpose and contents of each clause.