You can create & add a document outline in Google Docs using this guide. Difference between Table of contents & Document Outline explained.

Creating a manual table of contents involves structuring it to match the document outline and linking items in the list to the headings. Google Docs is one of the most versatile tools available to ...

Google Docs has several great built-in tools, including templates, which give you an outline to start with for certain documents. Here are the Google Docs templates I find most useful.

Prudent use of styles, stars, @ file mentions and more make Google Docs and Drive a powerful tool for longer and larger writing projects.

Then, Google Docs emerged – easy to use, free of charge and crucially, accessible to anyone with a Gmail account, it’s made pretty much anything that involves word processing much easier.