{"version":"1.0","type":"rich","title":"Fork of HTML Starter","description":"This example creates an SVG mask that reveals horizontal stripes through a circular window. The code generates 100 horizontal rectangles, each masked by a circle centered on the screen, while 100 vertical rectangles overlay the full canvas without masking. All shapes are built dynamically using the SVG namespace with `document.createElementNS`, and the mask is defined with a black background rect and white circle to control visibility. The result is a simple geometric pattern combining masked and unmasked grid-like elements.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fb6be251c58d4a1d832dd9285c3d4949?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}