---
title: equation
description: "## Syntax **equation**(filename) filename the file name of the MathML file to embed ## Purpose The equation domain annotations are used to embed MathML from external files into the DITA output."
url: "https://www.stilo.com/docs/migrate/paragraphs-figures-and-equations/equation/"
updated: "2021-04-27"
category: Annotations / Paragraphs, Figures and Equations
tags:
  - Annotations
---

# equation

## Syntax

**equation**(filename)

filename

the file name of the MathML file to embed

## Purpose

The equation domain annotations are used to embed MathML from external files into the DITA output.