• 1 · Religion and Magic
• 2 · Nature
• 3 · Human Being, Man in General
• 4 · Society, Civilization, Culture
• 5 · Abstract Ideas and Concepts
• 6 · History
• 7 · Bible
• 8 · Literature
• 9 · Classical Mythology and Ancient History

• Top
• 4 · Society, Civilization, Culture
• 49 · education, science and learning
• 49L · writing and letters

49L2 · pictorial and ideographic script

• 49L21 · Egyptian hieroglyphs
• 49L23 · oriental ideographic script (Chinese, Korean, Japanese)
• 49L24 · ancient American script (Maya, Aztec, Inca)
• 49L25 · pictograph
• 49L26 · 'ars memorandi', mnemotechnics
• 49L27 · mark of ownership