---
title: "Introduction"
manual: "schema_health"
version: "main"
permalink: "https://docs.typo3.org/permalink/brotkrueml/schema-health:introduction@main"
source: "Introduction/Index.rst"
rendered: "2026-09-18T07:40:48+00:00"
---

# Introduction {#introduction-1}

**Table of Contents**

-   [What does it do?](https://docs.typo3.org/permalink/brotkrueml/schema-health:what-does-it-do@main)
-   [The schema.org vocabulary](https://docs.typo3.org/permalink/brotkrueml/schema-health:the-schema-org-vocabulary@main)
-   [Release management](https://docs.typo3.org/permalink/brotkrueml/schema-health:release-management-1@main)

## What does it do? {#what-does-it-do}

This TYPO3 extension is an add-on to the [schema](https://extensions.typo3.org/extension/schema) extension. It provides
additional [schema.org](https://schema.org/) terms related to
health and lifesciences: [https://schema.org/docs/health-lifesci.home.html](https://schema.org/docs/health-lifesci.home.html).

For more information about the schema extension have a look into the
[documentation](https://docs.typo3.org/p/brotkrueml/schema/main/en-us/Introduction/Index.html#introduction).

## The schema.org vocabulary {#the-schema-org-vocabulary}

The schema.org vocabulary is evolving, approx. every 2-3 times a year a new
version is [released](https://schema.org/docs/releases.html). The TYPO3 extensions are
updated when changes are made to the according vocabulary. The classes for the
type models and view helpers are generated by the [schema-generator](https://github.com/brotkrueml/schema-generator) library.

## Release management {#release-management-1}

This extension uses [semantic versioning](https://semver.org/) which
basically means for you, that

-   Bugfix updates (for example, 1.0.0 => 1.0.1) just includes small bug fixes or
    security relevant stuff without breaking changes.
-   Minor updates (for example, 1.0.0 => 1.1.0) includes new features and smaller
    tasks without breaking changes.
-   Major updates (for example, 1.0.0 => 2.0.0) breaking changes which can be
    refactorings, features or bug fixes.