{"version":"1.0","type":"rich","title":"Table of Contents","description":"This example shows a collapsible table of contents for a book’s chapters and sections. Clicking a chapter heading toggles the visibility of its nested subsections, with a plus or minus sign indicating the expanded state. The page uses jQuery’s `click` handler, `fadeToggle`, and DOM traversal to animate the hide-and-show behavior, while CSS controls the heading colors, margins, and dotted borders. The content is hardcoded in the HTML, and no external data source is loaded.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/8351743b0ba04118a2575766d9f75562?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}