Last Reviewed: November 29, 2023

Style Guide

Formatting rules and guidelines for Pantheon's open-source documentation.

Edit this page on GitHub Report an issue with this doc

All documentation repositories should adhere to a style guide. This document serves to define and detail the style conventions used in Pantheon's documentation.

You can also reference the Pantheon Documentation Template to see the common structure of our docs, or copy it to begin a new content piece.

Detailed style guidelines can be found in the Google Developers Documentation Style Guide. However, the guidelines in this document supersede the Google guidelines.

Bold

Bold is used for navigational elements within a given interface:

Go to Account > Security > Personal Access Tokens.

Go to **Account** > **Security** > **Personal Access Tokens**.

Callouts

There are several types of callouts commonly used in our docs:

Notes

Note

Notes should identify important pieces of information the reader shouldn't miss.

<Alert title="Note"  type="info" >

Notes should identify important pieces of information the reader shouldn't miss.

</Alert>

Warnings

Warning

Warnings cover information critical to the reader and highlight potential dangers, especially those that can cause data loss.

<Alert title="Warning" type="danger" >

Warnings cover information critical to the reader and highlight potential dangers, especially those that can cause data loss.

</Alert>

Success

Success callouts are used infrequently, usually in guides with specific end results expected. Use success callouts to differentiate between two binary results.

Incorrect DNS Configuration

Incorrect vanity domain A record required DNS value

Correct DNS Configuration

Correct vanity domain A record required DNS value

<Alert title="Incorrect DNS Configuration" type="danger" icon="remove">

![Incorrect vanity domain A record required DNS value](../images/dashboard/wrong-vanity-aname-dns.png)

</Alert>

<Alert title="Correct DNS Configuration" type="success" icon="check">

![Correct vanity domain A record required DNS value](../images/dashboard/correct-a-aaaa-dns.png)

</Alert>

Cards

Use cards to visually display a list of items, with links to more information.

Note

CardGroup/Card is intended for Terminus guide use only. Instead, use ProductGroup/Product

Cards

<ProductGroup>

  <Product title={"Visual Regression Testing (VRT) and Automatic Updates with Autopilot"} link={"/autopilot"}>

  Automate finding, testing, and applying WordPress and Drupal updates.

  </Product>

  <Product title={"Quicksilver Webhooks"} link={"/guides/quicksilver/hooks"}>

  Use our [Quicksilver Webhooks repository](https://github.com/pantheon-systems/quicksilver-examples/tree/main/webhook) for a generic Webhook implementation.

  </Product>

</ProductGroup>

Check

Simple green checkmark. Replaces <span style="color:green">✔</span>

<Check/>

Before You Begin Sections

This section should outline any steps or services required before starting those in the doc. If there are other docs that should be completed first, list them here.

Of particular note, any documentation that uses Terminus should reference it in this section, and link to the Terminus Guide .

Before You Begin

Be sure that you have:

An existing WordPress site on Pantheon, or create one.
A local clone of your code repository.
An account with Amazon Web Services (AWS). Amazon offers free access to most of their services for the first year.
Terminus installed on your local computer.

## Before You Begin

Be sure that you have:

- An existing WordPress site on Pantheon, or [create](https://dashboard.pantheon.io/sites/create) one.
- A [local clone](/guides/git/git-config#clone-your-site-codebase) of your code repository.
- An account with [Amazon Web Services (AWS)](https://aws.amazon.com/s3/). Amazon offers [free access](https://aws.amazon.com/free/) to most of their services for the first year.
- [Terminus](/terminus) installed on your local computer.

Export Local Environment Variables

Be kind. If you're writing a guide that will use one or more example variables the reader must replace when following along, you should walk them through exporting them to local environment variables. See the Variables section below for more details.

Code Samples

Inline

Used for file names, variables, commands, and output, inline within paragraphs:

Inline code styling using backticks, like $EXAMPLE.

Inline code styling using backticks, like `$EXAMPLE`.

Blocks

/**
* Example Comment
*
* To provide additional context for the following
* code, and defining any variables the user must
* manually edit.
**/
if (!function_exists('install_drupal')) {
  $conf['preprocess_css'] = 1;
}

```php
# This is a Windows-friendly symlink
require_once WP_CONTENT_DIR . '/plugins/wp-redis/object-cache.php';
```

Shell Prompts

You can also define a single line code block as a command:

mkdir -p ~/repos/mdx-slug

```bash{promptUser: user}
mkdir -p ~/repos/mdx-slug
```

Or define which lines are output:

ls  -1 ~/repos
documentation
i3lock-color
i3lock-fancy
j4-dmenu-desktop
mdx-slug

```bash{outputLines:2-6}
ls  -1 ~/repos
documentation
i3lock-color
i3lock-fancy
j4-dmenu-desktop
mdx-slug
```

Line Highlighting

You can highlight a specific line in a code block the reader should focus on with //highlight-line, or a group with //highlight-start and //highlight-end:

curl -I dev.mysite.com
HTTP/1.1 200 OK
X-Pantheon-Styx-Hostname: styx1a
server: nginx/1.0.15
content-type: text/html; charset=utf-8
x-drupal-cache: MISS
set-cookie: SESSf60876d132c0913e5fc728eec7f71e38=M1Sr0bxLbbgYmbg1EW7N8sGF4anrKP1np25EkYta-ZU; expires=Wed, 19-Dec-2012 22:04:58 GMT; path=/; domain=.dev.mysite.com; HttpOnlyCache-Control: no-cache, must-revalidate, max-age=0last-modified: Mon, 26 Nov 2012 18:31:30 +0000
expires: Sun, 19 Nov 1978 05:00:00 GMT
x-pantheon-endpoint: c18646dd-aa2b-4faa-a4e3-d71ec3a5ce43
Date: Mon, 26 Nov 2012 18:31:38 GMT
X-Varnish: 486741958
Age: 0Via: 1.1 varnish
Connection: keep-alive
X-Pantheon-Edge-Server: 108.166.58.245
Vary: Accept-Encoding, Cookie

```bash{outputLines: 2-20}
curl -I dev.mysite.com
HTTP/1.1 200 OK
X-Pantheon-Styx-Hostname: styx1a
server: nginx/1.0.15
content-type: text/html; charset=utf-8
x-drupal-cache: MISS
//highlight-start
set-cookie: SESSf60876d132c0913e5fc728eec7f71e38=M1Sr0bxLbbgYmbg1EW7N8sGF4anrKP1np25EkYta-ZU; expires=Wed, 19-Dec-2012 22:04:58 GMT; path=/; domain=.dev.mysite.com; HttpOnly
Cache-Control: no-cache, must-revalidate, max-age=0
//highlight-end
last-modified: Mon, 26 Nov 2012 18:31:30 +0000
expires: Sun, 19 Nov 1978 05:00:00 GMT
x-pantheon-endpoint: c18646dd-aa2b-4faa-a4e3-d71ec3a5ce43
Date: Mon, 26 Nov 2012 18:31:38 GMT
X-Varnish: 486741958
Age: 0 //highlight-line
Via: 1.1 varnish
Connection: keep-alive
X-Pantheon-Edge-Server: 108.166.58.245
Vary: Accept-Encoding, Cookie
```

Content Types

The site features two distinct content types; docs and guides. We define docs as reference materials used to explain the behavior and intended use of Pantheon's platform features and service offerings. Guides are paginated and designed to walk the reader through a complex feature/product or to provide a collected resource of related topics in one location.

DNS

Creates a bulleted list of links to all DNS Provider docs stored in source/content/dns-providers, which do not have draft: true frontmatter.

<DNSProviderDocs />

File Downloads

Creates a link to a downloadable file. Files must be stored in source/scripts.

pantheon-backup-to-s3.sh

<Download file="pantheon-backup-to-s3.sh" />

Definitions

A dfn tag is used to indicate that a paragraph is defining a new term. New terms should only be defined once throughout the docs, and then cross-referenced. Definitions and Definition Lists are automatically added to the Glossary.

A <dfn id="dfn">dfn</dfn> tag is used to indicate that a paragraph is defining a new term.
New terms should only be defined once throughout the doc, and then cross-referenced.
Definitions and Definition Lists are automatically added to the [Glossary](/glossary).

Error Messages

Last reviewed: Jun 05 2022

When referencing error messages in the body of an article, format them as monospace, and either place them inline (if short) or as a new paragraph (if long).

When providing solutions to error messages, document them verbatim as H3s within a Troubleshooting section. Use the exact copy of the error message to help improve search result findability. Making the header an H3 makes the section linkable within the table of contents for easy sharing.

RedisException: Redis server went away

The following error occurs when Redis has not been enabled within the Site Dashboard:

RedisException: Redis server went away in Redis->setOption() (line 28 of /srv/bindings/xxxxxxxx/code/sites/all/modules/redis/lib/Redis/Client/PhpRedis.php).

Enable Redis via the Pantheon Site Dashboard by going to Settings > Add Ons > Add > Redis. It may take a few minutes to provision the service.

### RedisException: Redis server went away
The following error occurs when Redis has not been enabled within the Site Dashboard:

 ```none
 RedisException: Redis server went away in Redis->setOption() (line 28 of /srv/bindings/xxxxxxxx/code/sites/all/modules/redis/lib/Redis/Client/PhpRedis.php).
 ```

Enable Redis via the Pantheon Site Dashboard by going to **Settings** > **Add Ons** > **Add** > **Redis**. It may take a few minutes to provision the service.

File Excerpts

File excerpts are code blocks with a file name specified after the syntax as :title=FILENAME:

.gitignore

# WordPress #
#############
wp-config-local.php
wp-cli.local.yml
wp-content/uploads
wp-content/blogs.dir/
wp-content/upgrade/

```git:title=.gitignore
# WordPress #
#############
wp-config-local.php
wp-cli.local.yml
wp-content/uploads
wp-content/blogs.dir/
wp-content/upgrade/
```

Frontmatter

Meta data for a doc or guide is created in a section referred to as frontmatter. It lives at the very top of the file and is wrapped in three dashes.

Style Guide

Formatting rules and guidelines for Pantheon's open-source documentation.

Contributors: Alex Fornuto, Rachel Whitton

---
title: Style Guide
description: Formatting rules and guidelines for Pantheon's open-source documentation.
contributors: [alexfornuto, rachelwhitton]
---

To see the values currently used in our documentation, install our repository locally, then run one of the following reports:

Docs: List of all docs and tags; Searchable list of all docs and tags.
Partials: List of all partials and tags; Searchable list of all partials and tags.

Frontmatter Values

title: The title of the content.
description: A brief description displayed under the title.
contributors: An array of IDs for contributors to the content. The ID must correspond to an entry in contributor.yaml.
reviewed: The last date when the content was updated or reviewed for accuracy.
tags: An array of tags used by our search engine to quickly identify the primary topics found in the content.
category: A value corresponding to the content's position in the site architecture and (sometimes) corresponding category landing page.
contenttype: The content type for this content. Defaults to doc.
subtitle: Used in multipage guides to define a title for that page of the guide.
cms: An array of values for each CMS and version to which the content applies

Hyperlinks

Do not specify a target tab or window for external, or any other links, leaving the viewer the option to open in a new tab.

Internal Links

Use relative paths when linking to other pages of the docs site.

Getting Started

[Getting Started](/guides/getstarted)

External Links

Wikipedia entry on Style guide

[Wikipedia entry on Style guide](https://en.wikipedia.org/wiki/Style_guide)

Icons

List of available icons

Legacy icons

These additional icons will be deprecated but are currently available to represent icons in the site dashboard.

charts
cleaning
cloud-upload
equalizer
global
server

Add user

<Icon icon="userPlus" text="Add user" />

Italics

Emphasis should always be stressed with italics, and never with bold.

Emphasis should *always* be stressed with italics, and *never* with bold.

Headings

Give heading levels a meaningful hierarchy to ensure accessible navigation and structure.

Page Title

Header

Sub Header

Section not listed on TOC

---
title: Page Title
---

## Header

### Sub Header
##### Section not listed on TOC

Line Breaks and Spaces

Line breaks between components including between
- the YAML and the content
- headings and content
- list items (sometimes - check the preview to see if more space would help)
No trailing spaces.
Each MD file ends with a blank line
Spaces, not tabs! Each tab is two spaces or four sometimes

More Resources Section

This is the optimal place to provide links to external resources on the subject, or internal docs on common processes to follow after completing those above.

Panels/Accordions

Use panels for extraneous but useful information such as troubleshooting sections or pro tips that would be distracting or can be skipped over by a large portion of readers. This is primarily used in an effort to promote readability of a page.

Panel Title

Panel Content Header

This Panel contains additional context, or advanced instructions.

<Accordion title="Panel Title" id="example-panel" icon="wrench">

### Panel Content Header

This Panel contains additional context, or advanced instructions.

</Accordion>

Placeholder Text

Documentation IP set: specifically reserved for documentation (Reserved IP addresses):

203.0.113.0–203.0.113.255

Pantheon

Organization: Anita Agency
Site name: Anita Drupal

Redirects

Redirects are required whenever you change an existing URL or when a doc or guide is deprecated and removed from the Docs site. Deprecated pages should always be redirected to related content so users to do not receive a 404. Always add the Redirect label to the PR that includes a redirect. This allows us to find these changes later if we need to reference why a page was moved or deleted.

When you're moving a doc or heading to a new location, include a formatted table with your redirect request in the Pull Request comments.

Redirect from	to
docs.pantheon.io/drush	sc=301\|t=https://docs.pantheon.io/guides/drush
docs.pantheon.io/drush-versions	sc=301\|t=https://docs.pantheon.io/guides/drush/drush-versions
docs.pantheon.io/drush-import	sc=301\|t=https://docs.pantheon.io/guides/drush/drush-import
docs.pantheon.io/guides/drupal-commandline	sc=301\|t=https://docs.pantheon.io/guides/drush/drupal-commandline

| Redirect from | to |
|---|---|
| docs.pantheon.io/drush                     | sc=301\|t=https://docs.pantheon.io/guides/drush                    |
| docs.pantheon.io/drush-versions            | sc=301\|t=https://docs.pantheon.io/guides/drush/drush-versions     |
| docs.pantheon.io/drush-import              | sc=301\|t=https://docs.pantheon.io/guides/drush/drush-import       |
| docs.pantheon.io/guides/drupal-commandline | sc=301\|t=https://docs.pantheon.io/guides/drush/drupal-commandline |

Reusable Content/Partials

Create reusable content in a separate Markdown file that can be included within sections of other docs. These are called partials.

Place the Markdown file within the source/partials/ directory, in its own directory if it is feature-specific.

Warning

Partial file names must not duplicate the names of files in the source/content directory.

Partials use all of the same Markdown, style, and HTML as needed and outlined on this page, but do not require frontmatter. They can be included as their own paragraphs and sections as well as in lists as a step or bullet point.

After you create the file, include it in the doc:

This is an example of a partial.

It's reusable content so that editors can maintain a single source of information that can be included in multiple docs.

Keep the following in mind when using a partial:

Check for existing partials first. Don't recreate existing content. Check the partials directory in the GitHub repo.
Exclude the heading. Use the context of the referring doc to introduce the content.
Use links to headings that will work in any doc. Use [Frontmatter](/style-guide#frontmatter) instead of [Frontmatter](#frontmatter).
Note that if you include an image within a partial in a subdirectory, it requires another set of ../ to escape the directory.
- So an image referenced from a partial in source/partials/autopilot/ would be ../../../images/autopilot/image.png.

<Partial file="partial-example.md" />

To find partials to reuse, run this report (requires a local build of gatsby). The report can be filtered by metadata tags, and includes an excerpt of each partial.

Review Dates

Review dates indicate the last time a member of the Documentation team reviewed a document. There are two ways to indicate review dates.

The most common is by using the frontmatter reviewed: "YYYY-MM-DD" . The other is at the section level, using the ReviewDate component:

### Section Title
<ReviewDate date="YYYY-MM-DD" />

Screenshots

Submit screenshots without additional markup. For example, don't use Skitch to add an arrow. This helps the Docs team make edits as needed later.

Do not include any personal information like a name, email address, or UUID in the screenshot.

GUI

Screenshots are used to reference GUI instructions:

Alt text describing the image

![Alt text describing the image](../images/dashboard/new-dashboard/2024/terminus-cli-code-to-commit-dashboard.png)

Terminal

Terminal screenshots should be described in the text as much as possible, and should only be used to demonstrate intended output:

Alt text describing the image

![Alt text describing the image](../images/pr-workflow/composer-require-pathauto.png)

Tables

You can use markdown tables to describe availability based on service levels before providing instructions on how to enable or use a given feature. For example:

Enable Redis

All plans except for a Basic plan can use Redis. Redis is available to Sandbox site plans for developmental purposes, but Redis will not be available going live on a Basic plan.

Plans	Redis Support Show more information
Sandbox	✔
Basic	❌
Performance	✔
Elite	✔

## Enable Redis

All plans except for a Basic plan can use Redis. Redis is available to Sandbox site plans for developmental purposes, but Redis will not be available going live on a Basic plan.

| Plans         | Redis Support <Popover content="Available across all environments, including Multidevs." /> |
| ------------- | -------------------------------------- |
| Sandbox       | <span style="color:green">✔</span> |
| Basic         | ❌  |
| Performance   | <span style="color:green">✔</span> |
| Elite         | <span style="color:green">✔</span> |

Use ✓ to indicate yes and ❌ to indicate no.

Visit the Markdown Tables Generator for help with creating nice-looking and well-formatted tables.

Advanced Tables

Standard markdown tables don't allow for cells to span multiple rows or columns, but by using the gatsby-remark-grid-tables plugin, we can overcome this limitation:

Environment	Severity	Browser	Watchdog	logs/php-error.log
Dev	notice	✓	✓
	warning	✓	✓
	error	✓		✓
Test	notice		✓
	warning		✓
	error	✓		✓
Live	notice		✓
	warning		✓
	error			✓

Source Code

+-----------------+--------------+-------------+--------------+------------------------+
| **Environment** | **Severity** | **Browser** | **Watchdog** | **logs/php-error.log** |
+-----------------+--------------+-------------+--------------+------------------------+
|                 | notice       | **✓**       | **✓**        |                        |
|                 +--------------+-------------+--------------+------------------------+
| Dev             | warning      | **✓**       | **✓**        |                        |
|                 +--------------+-------------+--------------+------------------------+
|                 | error        | **✓**       |              |  **✓**                 |
+-----------------+--------------+-------------+--------------+------------------------+
|                 | notice       |             | **✓**        |                        |
+                 +--------------+-------------+--------------+------------------------+
| Test            | warning      |             | **✓**        |                        |
|                 +--------------+-------------+--------------+------------------------+
|                 | error        | **✓**       |              |  **✓**                 |
+-----------------+--------------+-------------+--------------+------------------------+
|                 | notice       |             | **✓**        |                        |
+                 +--------------+-------------+--------------+------------------------+
| Live            | warning      |             | **✓**        |                        |
|                 +--------------+-------------+--------------+------------------------+
|                 | error        |             |              |  **✓**                 |
+-----------------+--------------+-------------+--------------+------------------------+

Tabs

When working on a document that will cover steps for multiple CMSs, use tabs when possible to condense instructions that need duplication for the different applications.

Here's our WordPress specific copy, and an example snippet:

/**
  * Some WordPress specific thing
  *
  */

Code goes here.

<TabList>

<Tab title="WordPress" id="wp-example" active={true}>

Here's our WordPress specific copy, and an example snippet:

```php
/**
  * Some WordPress specific thing
  *
  */

Some code.
```

</Tab>

<Tab title="Drupal 7" id="d7-example">

Here's our Drupal 7 specific copy, and an example snippet:

```php
/**
  * Some Drupal 7 specific thing
  *
  */

Some code.
```

</Tab>

</TabList>

You can add a TOC to the right side of a document using the following frontmatter: showtoc: true.

Terminology

Personal Workspace: a user's personal work area, containing sites/settings specific to that user.
Professional Workspace: (formerly Organization) a feature set for a collection of users or sites.
Site Dashboard: the page the user gets when selecting a site from the Sites tab in a Workspace
Supporting Workspace: (formerly Supporting Organization): a Professional Workspace that's been added to a specific site's Team.

Tooltips

Tooltips are a great way to add additional information without cluttering up a section. For example, you can define jargon and even link out to an external resource without being distracting to the reader:

Given two new sites with slugs

first-site and second-site, each configuration will result in the following URLs:

Subdirectories: example.com/first-site and example.com/second-site.
Subdomains: first-site.example.com and second-site.example.com.

Given two new sites with slugs <Popover title="Slugs" content="Generally, are URL friendly descriptions for a post or a page in WordPress. In the context of WordPress Multisite, a slug is a URL friendly description for a network site." /> `first-site` and `second-site`, each configuration will result in the following URLs:

* Subdirectories: `example.com/first-site` and `example.com/second-site`.
* Subdomains: `first-site.example.com` and `second-site.example.com`.

Variables

When writing multi-step processes, repeated variables and constants should be defined before providing the first set of commands. If the doc has a "Before You Begin" section, define varables here. Provide them using the callout below, and follow common conventions (lowercase for variables, uppercase for constants).

Exports

This process uses Terminus extensively. Before we begin, set the variables $site and $env in your terminal session to match your site name and the Dev environment:

export site=yoursitename
export env=dev

<Alert title="Exports" type="export">

This process uses [Terminus](/terminus) extensively. Before we begin, set the variables `$site` and `$env` in your terminal session to match your site name and the Dev environment:

```bash{promptUser: user}
export site=yoursitename
export env=dev
```

</Alert>

Videos

Use the Wistia and YouTube components to embed videos across the docs site.

Landing pages (e.g., Get Started, Develop, Go Live, etc.) can set a video_id attribute to embed a YouTube sourced video to the top of the page. Embedding Wistia videos is not supported on landing pages at this time, however Wistia videos can be embedded elsewhere across the docs using the Wistia component as described below.

YouTube

Use the YouTube component to embed YouTube videos. Set both title and src, for example:

<Youtube src="AcL-v1j_XX0" title="Installing Drupal with demo content for Front-End Sites" />

Wistia

Use the Wistia component to embed Wistia videos. Set only the src without title, for example:

<Wistia src="7gn1g3ljz6" />

Voice, Style, and Flow

Some General Rules:

Only assume as much knowledge from the reader as specified in the Before You Begin section. Otherwise explain everything.
Avoid be verbs.
Avoid personal opinions, feelings, or anecdotes. Use an informal but succinct tone.
Use Inclusive Language, avoid colloquialisms and hyperbole.
Use title case for section headings.

Where's the User?

It is important to direct the user to the area in which an activity is taking place. For example:

To create a backup:

Click the Backup tab.
More instructions...

This instruction does not tell the user where the Backup tab is - is it in a Workspace? If so, which one? Is it on a Site Dashboard?

Instead, start by placing the user in the correct location:

To create a backup:

Go to the Site Dashboard.
Click the Backup tab.
More instructions...

Here are code snippets you can use to direct users to the correct location:

Dashboard

[Go to the Site Dashboard](/guides/account-mgmt/workspace-sites-teams/sites#site-dashboard)

Personal Workspace

[Go to your Personal Workspace](/guides/account-mgmt/workspace-sites-teams/workspaces#switch-between-workspaces)

Professional Workspace

[Go to the workspace](/guides/account-mgmt/workspace-sites-teams/workspaces#switch-between-workspaces)

Bold

Callouts

Notes

Warnings

Success

Cards

Check

Before You Begin Sections

Before You Begin

Export Local Environment Variables

Code Samples

Inline

Blocks

Shell Prompts

Line Highlighting

Content Types

DNS

File Downloads

Definitions

Error Messages

Last reviewed: Jun 05 2022

RedisException: Redis server went away

File Excerpts

Frontmatter

Style Guide

Hyperlinks

Internal Links

External Links

Icons

Italics

Headings

Page Title

Header

Sub Header

Section not listed on TOC

Line Breaks and Spaces

More Resources Section

See Also

Panels/Accordions

Panel Content Header

Placeholder Text

Redirects

Reusable Content/Partials

Review Dates

Screenshots

GUI

Terminal

Tables

Enable Redis

Advanced Tables

Tabs

Table of Contents

Terminology

Tooltips

Variables

Videos

YouTube

Wistia

Voice, Style, and Flow

Where's the User?