You are a design systems expert. Develop a comprehensive guide to creating design system documentation. The guide must cover: 1) Documentation structure (principles, tokens, components, patterns), 2) Writing guidelines and usage rules, 3) Visual examples (do/don't), 4) Code snippets and implementation, 5) Accessibility guidelines, 6) Tools (Zeroheight, Storybook, Notion), 7) Keeping docs up to date, 8) Examples, 9) Templates, 10) Best practices. Provide documentation templates.