# Complete Markdown Syntax Reference (English Version) --- ## 1. Headings # Heading 1 ## Heading 2 ### Heading 3 #### Heading 4 ##### Heading 5 ###### Heading 6 Alternative syntax: Heading 1 ========= Heading 2 --------- --- ## 2. Paragraphs & Line Breaks This is a paragraph. This is another paragraph (separated by an empty line). Line break (end with two spaces) Next line --- ## 3. Emphasis **Bold** __Bold__ *Italic* _Italic_ ***Bold + Italic*** ___Bold + Italic___ ~~Strikethrough~~ --- ## 4. Blockquotes > This is a blockquote >> Nested blockquote >>> Multi-level nested blockquote --- ## 5. Lists ### Unordered List - Item * Item + Item - Sub-item - Sub-sub-item ### Ordered List 1. First item 2. Second item 3. Third item 1. Sub-item 2. Sub-item ### Task List (GFM) - [ ] Incomplete - [x] Completed --- ## 6. Code ### Inline code This is `inline code` ### Code block ``` Plain code block ``` ### Fenced code block with language ```python def hello(): print("Hello Markdown") ``` ```c printf("Hello, World!"); ``` --- ## 7. Horizontal Rules --- *** ___ --- ## 8. Links ### Inline link [OpenAI](https://openai.com) ### Link with title [OpenAI](https://openai.com "Official Website") ### Reference-style link [OpenAI][1] [1]: https://openai.com --- ## 9. Images ### Inline image ![Example Image](https://upload.wikimedia.org/wikipedia/commons/thumb/4/48/Markdown-mark.svg/1200px-Markdown-mark.svg.png) ### Image with title ![Markdown Logo](https://upload.wikimedia.org/wikipedia/commons/thumb/4/48/Markdown-mark.svg/1200px-Markdown-mark.svg.png "Markdown Logo") ### Reference-style image ![Logo][logo] [logo]: https://upload.wikimedia.org/wikipedia/commons/thumb/4/48/Markdown-mark.svg/1200px-Markdown-mark.svg.png --- ## 10. Tables (GFM) | Left Align | Center | Right Align | |:-----------|:------:|------------:| | A | B | C | | 1 | 2 | 3 | --- ## 11. Escape Characters \* \_ \# \+ \- \. \! \| \` \\ --- ## 12. HTML Support Bold Italic
Line break ^Superscript _Subscript --- ## 13. Footnotes (Some platforms) This is a footnote example[^1] [^1]: Footnote content --- ## 14. Autolinks --- ## 15. Definition Lists (Some extensions) Term : Definition --- ## 16. Collapsible Content (GitHub / Notion)

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--- ## 17. Math Formulas (Platform-dependent) ### Inline formula $E = mc^2$ ### Block formula $$ \int_a^b f(x)\,dx $$ --- ## 18. Emoji (Platform-dependent) :smile: :rocket: :fire: --- ## 19. Comments (Invisible) --- ## 20. Anchors / Jump Links (Platform-dependent) [Jump to heading](#complete-markdown-syntax-reference-english-version) --- ## 21. Extended Syntax Examples ### Emoji :smile: :heart: :star: ### Mermaid Flowchart (Obsidian / GitHub supported) ```mermaid graph TD; A-->B; A-->C; B-->D; C-->D; ``` ### PlantUML (Some platforms) ```plantuml @startuml Alice -> Bob: Hello @enduml ``` ### Footnote with emoji This is a footnote[^note] [^note]: Footnote content, can include links or emoji 🌟

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