For rendering tests/debugging.

1. Headings (ATX style)

H1 Heading

H2 Heading

H3 Heading

H4 Heading

H5 Heading

H6 Heading

Headings can also use Setext style (H1/H2)
H1 equals-sign line

H2 equals-sign line

2. Paragraphs and Line Breaks

This is the first paragraph.
Add two spaces at the end of a line for a line break.

This is the second paragraph, with a blank line between paragraphs.

3. Emphasis

Italic or italic
Bold or bold
Bold italic or bold italic
Strikethrough
Underline (HTML)
==Highlight== (partially implemented, non-standard GFM, but common)
H2O subscript (must be enabled)
X^2^ superscript (must be enabled)

4. Lists

Unordered list

• Item 1
• Item 2
  • Indented sub-item
  • Sub-item 2
    • Indented further

• Asterisk list

• Plus list

Ordered list

1. First item
2. Second item
   1. Sub-item 1
   2. Sub-item 2
3. Third item (non-sequential numbers are fine)
4. Numbering continues automatically

Task list (GFM)

• Not done
• Done
• Subtask
  • Subtask done
  • Subtask not done

5. Code

Inline code const foo = 'bar';

Fenced code block:

function greet(name) {
          console.log(`Hello, ${name}!`);
        }
        

Indented code block:
def hello():
print("indented code block")

Fenced block with a language specified (displays even without highlighting):

SELECT * FROM users WHERE id = 1;
        

6. Blockquotes

This is a first-level quote.

This is a nested second-level quote.

Third-level quote.
Back to first level.

Quotes can contain other elements:

Heading inside a quote

• List item
  code

7. Links

Inline link
[Reference link][ref]
[Empty reference][]
Relative path
Autolink: https://example.com
Autolink email: user@example.com

8. Images

Reference-style image:
![Referenced image][imgref]

9. Tables (GFM)

No header separator line, but a delimiter row is required (it gets parsed as the header):

Use <br> for line breaks inside tables:
| First line
Second line | Plain |

10. Horizontal Rules

--- (three or more hyphens)
*** (asterisks)
___ (underscores)

11. Escape Characters

* Backslash escapes the asterisk
# Escapes heading
[ Escapes square bracket
]
( )
{ }
_
-
+
.
!
`
\

12. Inline HTML

Red text

13. Footnotes (non-standard GFM, partially supported)

This is a footnote example[^1]
Another footnote[^2]

Second line (indented).  
        

14. Definition Lists (non-standard, partially supported)

Term 1
: Definition 1
: Definition 2

Term 2
: Nested definition
> Quote

15. Indentation, In-paragraph Line Breaks, and Whitespace

Within a paragraph
line break (two spaces at the end of the line)

Blank line between paragraphs

    Space entities

16. Mixed Nesting Test

Heading inside a quote

• List inside a quote

1. Ordered list inside a quote

Code block inside a quote
        

Table inside a quote	Column
Value	Value

• Blockquote inside a list:

  Quote inside a list
  multiple lines

• Code block inside a list:

  print("code inside a list")
          

• Table inside a list:

  a	b
  c	d

17. Special Characters and Unicode

© ® ™ ° ± π ∑ √ ∞ ≠ ≤ ≥
Chinese: testing Chinese text display
Emoji: 😊 🚀 ❤️ ✅ 🔥
Japanese: こんにちは
Korean: 안녕하세요
Arabic numerals: 1234567890
Special symbols: ～｜＠＃＄％＾＆＊（）＿＋

18. Long Text and Line Wrapping Test

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

19. Empty Elements and Edge Cases

Empty list items:

• Normal item

Empty table cells:

Empty quote:

Empty code block:

Consecutive horizontal rules:

20. Multi-level Lists Mixed with Indentation

1. First-level ordered item
   • Unordered sub-item
     1. Ordered sub-sub-item
        • Task sub-sub-item
        • Done
   • Another sub-item

     Quote inside a sub-item
     continues

2. First-level ordered item, second one
   1. Sub-item
      1. Sub-sub-item
         1. Sub-sub-sub-item

21. Images Mixed with Links

[Link text][linkwithimage]

22. Autolink Detection (GFM)

https://github.com
http://example.com/path?query=1#fragment
www.example.com (non-standard, but sometimes parsed)
ftp://files.example.com

23. Strikethrough, Bold, and Italic Mixed

Italic strikethrough
Bold italic
Bold strikethrough
Bold italic strikethrough

24. Underline, Strikethrough, and Emphasis Boundaries

Bold _with underscores_ bold
Italic with bold italic
Bold next to italic

25. Escape Sequence Test

`not code`
*not italic*
_not italic_
[not link]
![not image]
#not heading
- not list
+ not list
. not numbered
\ backslash

The End