Short Definition
A part of the user interface that groups related tools or options together, often on the side or top of the screen (e.g., a settings panel or control panel in software).
Relevance
Panels divide content into sections. Accessible panels are well-organized and clearly labeled for easy navigation, including with assistive tools. Understanding panels allows you to help others locate and access different sections of a page or app, particularly when they’re unfamiliar with navigating complex interfaces.