# Displaying and Running External Sources

~~~md
```file
path: hello_world.py
lang: python
```
~~~

```file
path: hello_world.py
lang: python
```

The source file above is run below:

```terminal8
python ./hello_world.py
```

# Loading and Transforming External Files

~~~md
```file
path: 1x1.png
lang: text
transform: xxd
lines:
  end: 5
```
~~~

Below are the first five lines of the 1x1.png file after being run through
the `xxd` program:

```file
path: 1x1.png
lang: text
transform: xxd
lines:
  end: 5
```
