Available in all G-Suite apps, including Docs, Slides, Sheets, and Drawings.
In each app, click TOOLS → Accessibility Settings
Add-Ons
Note: Although approved by Google, add-ons are usually created by third-party entities. Add-ons are designed to work with specific G-Suite apps.
ACCESSING ADD-ONS
From each G-Suite app (Docs, Slides, etc.), click the Add-ons menu. To get a new add-on, click "Get add-ons." Existing add-ons will also appear in this menu.
GOOGLE DOCS ADD-ONS TO SUPPORT WRITING
LANGUAGE TOOL
Includes grammar and spell-checkers that are superior to the innate ones in Google Docs.