In Wicca, a private book containing spells, rituals, potions, and occult knowledge, called a "Book of Shadows", is kept. In some types of Wicca, such as Gardnerian Wicca, the contents of the book are kept secret from anyone but other members of the group, or . However, some versions of the book have been published. Some parts of these published versions, such as the "Wiccan Rede" and the "Charge of the Goddess" have been used by non-Wiccans or Wiccans. Many eclectics create their own personal books, and keep them to themselves.