---
title: "General Concepts"
manual: "RTE by CKEditor"
version: "14.3"
permalink: "https://docs.typo3.org/permalink/typo3/cms-rte-ckeditor:general-concepts@14.3"
source: "GeneralConcepts/Index.rst"
rendered: "2026-10-09T09:22:40+00:00"
---

# General Concepts {#general-concepts}

## User interfaces {#user-interfaces}

CKEditor has multiple user interfaces, of which TYPO3 uses the following:

-   **Classic**

    Editing is done within a fixed container.
    It is possible to customize how the editor behaves and how the content is styled.

    Used in the TYPO3 Backend.

-   **Inline**

    All formatting styles are reused from the surrounding HTML and CSS styles,
    allowing for a seamless frontend editing.

    Used by TYPO3’s frontend_editing,
    which can be found on [GitHub](https://github.com/FriendsOfTYPO3/frontend_editing).
    frontend_editing is not covered in this document.

For a demonstration of all user interfaces,
see the [CKEditor demo](https://ckeditor.com/ckeditor-5/demo/editor-types/).