---
title: "Template Reference"
description: "A Template reference of how the template is structured. This a useful information for building a custom block or editing templates in code."
url: https://docs.topol.io/email-editor/template-reference/introduction.html
---

# Introduction

**A Topol template is composed of sections, columns, and blocks.** A section holds up to 4 columns, and each column contains one or more blocks stacked vertically.

## Topol Template Visualization

![Structure of Topol Template](https://docs.topol.io/template-light.png)