What must be ensured about the tabs linked to an application?

To ensure a smooth user experience and maintain a clear navigational structure, it is essential that none of the tabs linked to an application function as parent tabs. Parent tabs typically hold sub-tabs, which can complicate the user interface by introducing unnecessary complexity. If all tabs are strictly designated as child tabs, this delineates them as secondary links and helps in creating a clean, engaging layout that is easy for users to navigate. This organization improves usability, allowing users to focus on the content presented without additional hierarchical layers that parent tabs would introduce.

This design principle helps in creating a straightforward and intuitive navigation system, making it easier for users to find the information they need quickly and efficiently. When tabs serve solely as links without becoming parent tabs, they promote readability and enhance the overall user experience.