Glossary

Admin tools are a group of backend modules. These include maintaining the installation, adjusting settings, executing upgrade wizards, checking environment information and setting up extensions.

Apache httpd is a web server. Others are Nginx, Microsoft IIS and Caddy Server (see system requirements).

In TYPO3, the Application Context is the environment (e.g., Development, Production) the site is running in, which sets things like debugging or performance optimization accordingly. This helps tailor TYPO3 behavior for each stage of deployment.

Assets are media resources such as images, videos and documents that are uploaded and managed in TYPO3 system. Also, extensions can include assets which used in the frontend, like icons or JavaScript libraries.

The backend is the administrative interface for editors and administrators.

In TypoScript you can use block syntax to enhance the readability of your code.

Bootstrap is a popular, beginner-friendly framework for building responsive, mobile-first websites using pre-designed HTML, CSS, and JavaScript components.

Caches are used to improve website performance by storing frequently accessed data. TYPO3 has multiple caches for various performance-relevant areas in both the frontend and backend.

A character set is a collection of letters and symbols used in a writing system.

In PHP we can define classes located in the directory EXT:my_extension/Classes. If the namespace is correct they will be loaded automatically.

A CMS, or Content Management System, is software like TYPO3 that allows users to create, edit, and manage website content without needing to code, making it easier to maintain and update websites.

A cObject (content object) is a core concept used to render content types on a website, allowing developers to define and control how content elements like text, images, and menus are displayed.

Composer is a tool used in TYPO3 to install, update, and manage extensions and libraries, making it simple to handle dependencies and keep the system up to date.

In TypoScript you can compress css and js files.

A Content Security Policy (CSP) makes the frontend and backend more secure from attacks by restricting the rules governing what a user of a website or TYPO3 backend can do. CSP is a W3C standard valid for everyone. TYPO3 provides a backend module that manages this security feature. CSP helps to protect your website from attacks by controlling which resources (like scripts, styles, or images) are loaded, reducing the risk of malicious content being injected. To configure CSP go to Content Security Policy.

CType refers to Content Type and is a database column field in a very important database table called 'tt_content' which stores all the content elements. The column defines the name of the content element, and influences how it is displayed in the backend and frontend.

A database stores and manages all a website's content, settings, and configurations, allowing the system to retrieve and display data dynamically on the site.

DDEV is a local development tool that simplifies setting up a TYPO3 environment on your computer, making it easy to start developing, testing, and managing TYPO3 projects without complex configuration.

Debug Mode is a feature that helps developers find and fix errors by showing detailed information about a website’s processes and any issues with the code.

In Composer there are usually dependencies that have to be installed too.

Deployment refers to the process of transferring your website’s code, content, and settings from a development environment to a live server, making it accessible to users online.

A developer is someone who builds, customizes, and maintains a website, creating new features, fixing issues, and ensuring everything works smoothly for users and administrators.

Docker is a tool that runs TYPO3 in a consistent and isolated environment by packaging it with all its dependencies, making setup, deployment, and development easier and more reliable.

Documentation consists of detailed guides and instructions to help users and developers understand, set up, and customize TYPO3, making it easier to work with the system effectively.

An editor is a user who creates and manages content on a website, such as adding text, images, and links, without needing technical or coding knowledge.

An error page is a custom page that is displayed to users when something goes wrong, such as when a page is not found (404) or there is a server issue (500).

An extension is an add-on that provides additional features or functionality to a website, allowing you to customize and expand what TYPO3 can do.

File abstraction layer (FAL) is a system that manages and organizes media files, allowing you to easily store, access, and use files across the entire website in a standardized way.

Fileadmin is a folder structure where you can organize and manage all the files, such as images, documents, and media, that are used on your website.

The filelist is a backend module where you can upload files and manage your uploaded files.

Fluid is a PHP template engine and is the de facto standard for any HTML-based output in the TYPO3 CMS. See Fluid Reference for further details.

The fluid styled content extension is a system extension provided by TYPO3 that gives you default content elements, palettes and backend fields. That is the reason why you can use bodytext, image and assets without having to do a database compare.

The frontend is the publicly accessible part of a website.

You can implement a frontend login on your website. To implement this use the system extension felogin provided by TYPO3.

In TYPO3 there is a global TYPO3 configuration array ($GLOBALS) where you can declare global settings/variables for your TYPO3 instance. There are many different options. For example: BE - backend configuration, DB - database connections and many more.

The Install Tool password is a secure password used to access the Install Tool, a tool that allows administrators to configure and manage the TYPO3 system, including database connections and system settings.

An integrator is a person who connects and configures external systems, services, or data sources with the TYPO3 platform, ensuring smooth integration and functionality across different tools and applications.

A language file is a file that contains translated text for a website, allowing content to be displayed in different languages based on a user’s preferences or settings.

Layouts are templates that define the structure and design of content elements on a website, allowing you to customize how content is presented on different pages.

It is common practice to develop locally on your local machine first. Later when you are sure about your website you can think about deployment and setting up a production environment which has better performance and Content Security Policy settings.

The log folder is a directory where system logs are stored, helping administrators track errors, events, and activities to diagnose and troubleshoot issues with a website.

LTS (Long-Term Support) in TYPO3 refers to a version of the software that receives extended updates and security fixes for several years, ensuring stability and reliability for businesses and long-term projects.

The Page Tree is a hierarchical structure that represents pages and their subpages on a website, allowing you to easily organize and manage content and navigation.

A partial is a small or large HTML code snippet that can be used often and in multiple places. Here we split up the template into partials.

Permissions control what users can see and do within a system, such as editing content, managing files, or configuring settings, based on their assigned roles and access levels.

PHP is a programming language used in TYPO3 to create dynamic web pages and handle server-side logic, enabling features like content management, user interactions, and database access.

A production server is the live server where a fully developed website is hosted, making it accessible to users on the internet, and it typically has optimized settings for performance and security.

The Reference Index is a system that keeps track of all content elements, files, and records that are linked or referenced throughout the website, helping maintain data integrity and consistency.

In TYPO3, resources refer to files such as images, documents, and other media that are used on a website, which are stored and managed through the File Abstraction Layer (FAL) for easy access and organization.

The Root Page is the top-level page in the Page Tree, serving as the starting point for a website's structure and is the foundation for the site's overall configuration and settings.

SEO (Search Engine Optimization) refers to the process of optimizing a website's content, structure and technical settings to improve its visibility and ranking in search engine results, helping to attract more visitors.

Site configuration is the setup that defines the settings for a specific website or domain, such as its language, routing, and templates, enabling TYPO3 to serve the correct content for that site.

A site package is a custom extension that includes all the necessary templates, configurations and settings to create and manage a specific website, allowing for easy setup and deployment.

Site sets refer to configurations that define specific settings for different websites or domains within a multi-site setup, allowing you to manage multiple websites from a single TYPO3 installation.

A snapshot is a backup or saved version of a website's content, settings, and configuration at a specific point in time, which can be restored if needed.

In the context of templating we say a html file is "static" when it does not use Fluid but only plain HTML.

A symlink (symbolic link) is a shortcut or reference to a file or directory located elsewhere on the server, allowing you to link content or resources without duplicating them.

A system extension is a built-in extension that provides essential functionality and features for the core system, such as user management, backend tools, and caching, which are necessary for the website to operate.

A System Maintainer is a person responsible for managing and maintaining the overall health and performance of a TYPO3 installation, ensuring that the system is up to date, secure, and running smoothly.

A HTML (Fluid) template is used to output HTML code. See also Fluid Templates. Usually we use Fluid and the ViewHelpers. Get an introduction to Fluid templates.

The templating engine that TYPO3 uses is Fluid.

TER (TYPO3 Extension Repository) is an online platform where developers can share and download extensions, allowing users to easily extend the functionality of their TYPO3 installation.

Testing involves checking the functionality, performance, and security of a website or extension to ensure everything works as expected before deployment or during updates.

A third-party extension is an add-on developed by external developers or companies. They extend the functionality of TYPO3, providing additional features or integrations not included in the core system.

Top-level objects are core components or elements, such as pages or content objects, that serve as starting points for building and organizing the structure and content of a website.

In TYPO3 you can set how the TYPO3 backend looks with TSconfig files. You can set page related appearance, backend user related appearance and backend user group appearance. You can use TSconfig Reference as a overall reference to look up settings that you can use for TSconfig. Normally you keep all your settings in TSconfig files like EXT:my_extension/Configuration/Sets/MyExtension/page.tsconfig.

TypoScript is the basic configuration language used to configure the frontend output of a page in TYPO3.

The var folder is used to store temporary files, cached data, logs, and other system-related information that helps the system function efficiently during runtime.

The vendor folder is where external libraries and dependencies, such as third-party extensions and frameworks, are stored. They are typically managed by Composer, to be used by the TYPO3 system.

A view helper is a reusable function or tool used in Fluid templates to manipulate or display data in a specific way, helping to keep templates clean and organized.