When the government makes a special rule about national parks, they have to tell everyone about it. They do this by putting it in a book called the Gazette. This book is where important government decisions are written down for people to see. The special rules they might make are about creating new national parks, changing the size of existing parks, or deciding exactly where the boundaries of a park are. If you want to know about these changes to national parks, you can look in the Gazette to find out.