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

# Customizing MathJax

Anki's bundled MathJax support is loaded before your card content, so if you wish to customize MathJax, you will need to do so in a specific way.

For recent Anki versions, use something like this:

```html theme={null}
<script>
    MathJax.config.tex["macros"] = {
        R: "{\\mathbb {R",
    };
    if (typeof is_already_run == "undefined") {
        is_already_run = true;
        MathJax.startup.getComponents();
    }
</script>
```

For older Anki versions:

```html theme={null}
<script>
    MathJax.Hub.Config({
    ...
    });
    MathJax.Hub.Configured();
</script>
```

Notes:

* Please avoid changing the standard open/close tags (`\(` and `\[`), to something like `$` and `$$`, as Anki has special logic for cloze deletions, which will not work if you change the delimiter.