1. Headings Test

H1 Heading

H2 Heading

H3 Heading

H4 Heading

H5 Heading

H6 Heading

2. Text Styling

Bold Text
Italic Text
Bold & Italic
~~Strikethrough Text~~
Inline Code
Underlined Text (via HTML)
Keyboard style: Ctrl + C
Superscript & Subscript: H₂O / X²

3. Lists

Unordered List

Item A
Item B
- Subitem B-1
- Subitem B-2
  - Third-level indentation
Item C

Ordered List

Step 1
Step 2
1. Substep of Step 2
2. Substep of Step 2
Step 3

Task Lists

Completed task
Pending task A
Pending task B

4. Blockquotes & Admonitions

Standard Blockquote

This is a blockquote.

It can contain blank lines.

Nested Blockquote

First level

Second level

Third level

Admonition Blocks (GFM Alert Syntax - if supported)

NOTE

This is a Note type admonition block.

WARNING

This is a Warning type admonition block.

5. Code Highlighting

JavaScript

function helloWorld() {
  const message = "Hello, Markdown!";
  console.log(message);
  return true;
}

Python

import os

def list_files(directory):
    # This is a Python function
    return [f for f in os.listdir(directory)]

Diff (Difference Comparison)

var x = 10;
const x = 20;

6. Tables

Left-aligned	Center-aligned	Right-aligned
Cell 1	Cell 2	Cell 3
Text content	Italic	Bold
Longer text test	`code`	$100

7. Links & Images

Images

8. Mathematical Formulas (LaTeX)

Inline Formula

The mass-energy equivalence is $E = mc^2$ , and Euler’s formula is $e^{i\pi} + 1 = 0$ .

Block Formula

Gaussian integral:

\int_{-\infty}^{\infty} e^{-x^2} dx = \sqrt{\pi}

Maxwell’s equations (differential form):

\begin{aligned} \nabla \cdot \mathbf{E} &= \frac{\rho}{\varepsilon_0} \\ \nabla \cdot \mathbf{B} &= 0 \\ \nabla \times \mathbf{E} &= -\frac{\partial \mathbf{B}}{\partial t} \\ \nabla \times \mathbf{B} &= \mu_0\mathbf{J} + \mu_0\varepsilon_0\frac{\partial \mathbf{E}}{\partial t} \end{aligned}

9. Extended Features

Footnotes

This is a sentence with a footnote ¹. Here’s another with a footnote ².

Definition List

Markdown
: A lightweight markup language.

HTML
: HyperText Markup Language.

Mermaid Diagrams (if supported)

graph TD;
    A[Start] --> B{Decision};
    B -- Yes --> C[Execute Action];
    B -- No --> D[End];
    C --> D;

10. Special Character Escaping

Asterisk: *literal asterisks*
Hash: #hashtag
Backtick: `

This is a simple footnote. ↩
This is a longer footnote that can span multiple lines. ↩