This document is the illustrated rules and regulations implementing Republic Act No. 8491, known as "The Flag and Heraldic Code of the Philippines." It was published by the National Historical Commission of the Philippines to provide guidance on the proper use of Philippine national symbols like the flag, anthem, motto and coat of arms. The document outlines the history and evolution of Philippine heraldry from Spanish colonial times to the present. It also contains the full text of Republic Act No. 8491 and its implementing rules, along with related laws, resolutions, and appendices on the national symbols.