# MyST reference
[Source](https://myst-parser.readthedocs.io/en/latest/index.html)
## Heading 2
### Heading 3
#### Heading 4
## Style
- Use **two asterisks** or underscores for **bold**.
- Use *one asterisk* or underscore *italics*.
- Use backquotes for `code`
## Lists
Use `*`, `-`, or `+` for unordered lists.
- apple
- banana
Use `1.` for ordered lists.
1. apple
1. banana
## Syntax
````
```{directivename} arguments
:key1: val1
:key2: val2
This is
directive content
```
````
## Admonitions
```{admonition} This is my admonition
This is my note.
```
```{caution} This is my admonition
This is my note.
```
```{danger} This is my admonition
This is my note.
```
```{error} This is my admonition
This is my note.
```
```{hint} This is my admonition
This is my note.
```
```{important} This is my admonition
This is my note.
```
```{note} Notes require **no** arguments, so content can start here.
```
```{tip}Notes require **no** arguments, so content can start here.
```
## Nesting directives
````{note}
The next info should be nested
```{warning}
Here's my warning:
```
````
## Code
```{code-block} python
:lineno-start: 10
:emphasize-lines: 1, 3
a = 2
print('my 1st line')
print(f'my {a}nd line')
```
### Literal include
[Reference](https://www.sphinx-doc.org/en/master/usage/restructuredtext/directives.html#directive-literalinclude)
```{literalinclude} 3_basics/basics/player.gd
:language: gd
:linenos:
```
### start-at
The `_ready` function:
```{literalinclude} ./3_basics/basics/player.gd
:language: gd
:linenos:
:start-at: func _ready
:end-before: func _process
```
The `_unhandled_input` function
```{literalinclude} 3_basics/basics/player.gd
:language: gd
:linenos:
:start-at: func _unhandled_input(event):
```
The `_process` function
```{literalinclude} 3_basics/basics/player.gd
:language: gd
:linenos:
:start-at: func _process
:end-before: func _unhandled_input
```
## Images
Include full resolution.
Image with 200px width.
{w=200px}
## Math
Since Pythagoras, we know that {math}` a^2 + b^2 = c^2`.
```{math}
:label: mymath
(a + b)^2 = a^2 + 2ab + b^2
(a + b)^2 &= (a + b)(a + b) \\
&= a^2 + 2ab + b^2
```
The equation {eq}`mymath` is a quadratic equation.
## Download
Download a {download}`Godot Script <3_basics/basics/player.gd>`.
Download a {download}`Godot Scene <3_basics/basics/player.tscn>`.
Download a {download}`Godot Project <3_basics/basics.zip>`.
## Play the web game
[Play the project online](_static/intro/intro.html){.external}
Include the game with an iframe.
```
```