# Features
guidebook comes with many built-in features:
- [Mermaid Diagrams](mermaid.md) - Create diagrams with code
- [Collapsible Chapters](collapsible.md) - Expandable sidebar navigation
- [Search](search.md) - Full-text search
- [Multi-language](multi-language.md) - Write books in multiple languages
- [Glossary](glossary.md) - Auto-linked term definitions with tooltips
- [Import Files](import.md) - Include content from other files
- [Front Matter](front-matter.md) - YAML metadata for pages
- [Templates](templates.md) - Nunjucks/Jinja2 conditionals, loops, and filters
- [AsciiDoc](asciidoc.md) - Use `.adoc` files alongside Markdown
- [Math (KaTeX)](math.md) - Render mathematical formulas
- [SVG Processing](svg.md) - Externalize or inline SVG files
- [OpenAPI / Swagger](openapi.md) - Generate Swagger UI from specs
- [Self-Update](self-update.md) - Update guidebook from the CLI