# Definition

To define a footnote use

`````
[^my-id]: extra content for my footnote goes here
potentially including code blocks
```
Constructor()
```
`````

To add a reference to the footnote use `[^my-id]` which will result in [^my-id]

[^my-id]: extra content for my footnote goes here
    potentially including code blocks
    ```
    Constructor()
    ```

# Preview

Hover mouse over a footnote reference see its content in a tooltip.
