In addition, you can improve the accessibility of information by adjusting your computer’s browser and operating system settings.
A more detailed guide on this topic is available here (in English).
Keyboard Navigation
This website can be navigated using the keyboard only. Navigation is performed using the Tab key. Each press moves the focus to the next element. The currently active element is indicated by a change in colour and a box around it. To activate a link that is in focus, press the Enter key.
The first two links that become active when navigating in this way are hidden from regular users and are intended specifically for keyboard users. These are “Skip to main content” and “Accessibility”.
“Skip to main content” bypasses the header and the left-hand panel and takes you directly to the main content of the page. “Enable high contrast” switches the page to a high-contrast design: the text becomes white, links become yellow, and the background becomes black. “Accessibility” links to the page you are currently viewing.
Enlarging Content
Web Browsers
To enlarge content, we recommend first using the zoom functionality built into your web browser.
In all popular web browsers, you can zoom in and out by holding down the Ctrl key (Cmd on OS X) and pressing either the + or - key at the same time. Another convenient option is to use the mouse: hold down the Ctrl key while scrolling the mouse wheel. To return to the default size, press Ctrl and 0 simultaneously.
Standalone Programs
All commonly used operating systems include tools for enlarging content displayed on the screen.
In Windows 7, you can find a program called Magnifier by clicking the “Start” menu button in the bottom-left corner, typing Magnifier (the first few letters are enough), and pressing Enter. A small window will open in which everything is magnified. By default, the program follows the position of the mouse cursor.
In Windows 10, click the Windows logo button in the bottom-left corner and, at the same time, press the plus (+) key on your keyboard as many times as needed to increase the magnification. To reduce the size of the content, press the Windows logo key and the minus (-) key simultaneously.
On Apple computers, you can enable zoom by navigating to: Apple menu > System Preferences > Accessibility (or Universal Access) > Zoom.
Web Browser Extensions
There are also browser extensions that provide additional zooming options beyond the browser’s built-in functionality. For example, Firefox offers “Zoom Page”, which allows you to enlarge either the entire page or only the text; for Chrome, there is AutoZoom.
Using a Screen Reader
A screen reader is a program that attempts to interpret the content displayed on a computer screen and present it in other forms, for example as sounds or spoken commentary. It is primarily an assistive tool for people with visual impairments.
The content on this website has been created in accordance with standards that are compatible with screen readers and in a way that allows all types of visual content to be presented in an alternative format. For example, images include text descriptions, videos are accompanied by descriptions of what is happening on screen, and the placement and order of structural elements take screen reader navigation into account, allowing information to be accessed in a logical sequence.
A selection of popular screen readers:
- JAWS (Windows) http://www.freedomscientific.com/
- VoiceOver (OS X, free, built in)
- NVDA (Windows, free) http://www.nvaccess.org/download/
- SystemAccess (Windows) http://www.serotek.com/systemaccess
Last updated: 26.08.2026
