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GitHub Flavored Markdown (GFM) is a Markdown dialect based on CommonMark spec.
This page lists extensions not exist in CommonMark.

- Spec: https://github.github.com/gfm/

## Strikethrough extension

```markdown
~~This text is rendered with strikethrough~~.
```

~~This text is rendered with strikethrough~~.

## Task Lists extension

```markdown
- [x] Checked
- [ ] Unchecked
```

- [x] Checked
- [ ] Unchecked

## Footnotes extension

```markdown
This is a normal paragraph[^1].

[^1]: I'm not.
```

This is a normal paragraph[^1].

[^1]: I'm not.

## Autolinks extension

```markdown
https://github.github.com/gfm/
```

https://github.github.com/gfm/

## Tables extension

```markdown
|  Language  | Execution         |
| :--------: | ----------------- |
| JavaScript | Interpreter & JIT |
```

|  Language  | Execution         |
| :--------: | ----------------- |
| JavaScript | Interpreter & JIT |
|    Dart    | AOT or JIT        |