> For the complete documentation index, see [llms.txt](https://nouthemes-2.gitbook.io/auto-x/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nouthemes-2.gitbook.io/auto-x/edit-theme-file-change-code-default/introduction.md).

# Introduction

This is an advanced feature that allows you to easily customize the structure and functionality of the theme according to your needs. However, this requires basic knowledge of HTML/CSS and Handlebars.

{% hint style="info" %}
Warning: Please duplicate (make a copy of) your theme before making any code changes within your theme. This will help avoid risks that may affect your website when code issues arise.
{% endhint %}