Final answer:
The query discusses a user interface that uses tabs, a Table of Contents, breadcrumbs, and section summaries to organize and navigate the information in a digital format.
Step-by-step explanation:
The student's question refers to a user interface design that organizes information into tabs and subsections for easy navigation. On each chapter page, there is a box showing the chapter's subsections and the content covered. Users can interact with a Table of Contents to expand or collapse information and use digital breadcrumbs for quick navigation. Section summaries provide a distillation of information into concise points for students and instructors.