---
title: "Reference lines"
slug: "reference-lines"
updated: 2021-09-27T11:50:31Z
published: 2021-09-27T11:50:31Z
canonical: "userguide.dataclassroom.com/reference-lines"
---

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

# Reference lines

You can add **reference lines** to scatter plots, histograms and bar charts.

This is done in the Appearance menu, where you just select the value and color for your reference lines:

![](https://cdn.document360.io/62f8f41e-e041-42c4-b9bc-8ae1eb45d064/Images/Documentation/image-1632728488199.png)

![](https://cdn.document360.io/62f8f41e-e041-42c4-b9bc-8ae1eb45d064/Images/Documentation/image-1632728668871.png)