The markdown source of the above post:

# Header 1

## Header 2

### Header 3

#### Header 4

This is normal text. Two spaces at end of line to force line break.  
_italic with underscores_  
*italic with asterisks*  
**bold with double asterisks**  
__bold with double underscores__  
~~strikethrough with double tildes~~

superscript^with-single-caret-no-spaces-or-nesting^  
subscript~with-single-tilde-no-spaces-or-nesting~

This is `inline code` with single backticks.

```
This is a code block
with triple backticks.
```

    This is a code block
    indented by 4 spaces.

> Block quote
> 
> after paragraph break

::: spoiler Spoiler block with triple colons
Spoiler content
:::