['UDY PACK 23 This handbook is comprised of 21 packs, each devoted to a ifferent subject, with a checksheet given at the beginning of each ack for your use. Follow the instructions above for getting through a checksheet nd check off each item on the checksheets as you progress through ie packs. Ensure you study thoroughly each section of the pack you are on nd do each drili before proceeding onto the next section. Glossary An extensive glossary containing ali the Dianetic and Scientology rms dealing specifically with the text is provided in the back of this ook. Ii is essential to your ultimate success with this text that you do se the glossary. Scientology words and their definitions are the gateway to a new Dok and understanding of life. Understanding them will help you live etter, and will assist you along the road of truth that is Scientology.