---
title: Content set-level configuration
description: Elastic documentation is spread across multiple repositories. Each repository can contain one or more content sets. A content set is a group of documentation...
url: https://docs-v3-preview.elastic.dev/elastic/docs-builder/pull/2862/configure/content-set
---

# Content set-level configuration
Elastic documentation is spread across multiple repositories. Each repository can contain one or more content sets. A content set is a group of documentation pages whose navigation is defined by a single `docset.yml` file. `docs-builder` builds each content set in isolation, ensuring that changes in one repository don’t affect another.
A content set in `docs-builder` is equivalent to an AsciiDoc book. At this level, the system consists of:

| System property                                                                                                                                        | Asciidoc                                                                                                                                              | V3                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------|
| **Content source files** --> A whole bunch of markup files as well as any other assets used in the docs (for example, images, videos, and diagrams).   | **Markup**: AsciiDoc files **Assets**: Images, videos, and diagrams                                                                                   | **Markup**: MD files **Assets**: Images, videos, and diagrams |
| **Information architecture** --> A way to specify the order in which these text-based files should appear in the information architecture of the book. | `index.asciidoc` file (this can be spread across several AsciiDoc files, but generally starts with the index file specified in the `conf.yaml` file)) | `docset.yml` and/or `toc.yml` file(s)                         |


## Learn more

- [File structure](https://docs-v3-preview.elastic.dev/elastic/docs-builder/pull/2862/configure/content-set/file-structure).
- [Navigation](https://docs-v3-preview.elastic.dev/elastic/docs-builder/pull/2862/configure/content-set/navigation).
- [Attributes](https://docs-v3-preview.elastic.dev/elastic/docs-builder/pull/2862/configure/content-set/attributes).