> For the complete documentation index, see [llms.txt](https://developer.unstack.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.unstack.com/docs/features/values.md).

# Variables

You can reference the value of a system variable using curly brackets like this:

```
{element}
```

In practice variable references should never appear on their own, but rather be nested between tags:

```jsx
<h2>{article.title}</h2>
```

You can also use [template literals](https://www.w3schools.com/js/js_string_templates.asp) inside of curly brackets:

```jsx
<a href={`/${article.relative_url}`}>Read more</a>
```