> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abscissa.eu/llms.txt
> Use this file to discover all available pages before exploring further.

# Comments

> Learn how comment in your code.

## Usage

You can type comments into your Mathsys code on each new line by writing a hashtag followed by a space and then your comment:

```ms3 theme={"dark"}
# comment!
#invalid!
```

You can write anything until the end of the line.