This example demonstrates how to set up a D3.js visualization in VizHub, creating a full-window SVG canvas that spans the entire browser viewport. The code imports `ascending` and `select` from the D3 library via ES6 modules, then uses `select` to append an SVG element sized to the window dimensions. D3 is loaded from UNPKG alongside local CSS and JavaScript files. The visualization initializes an empty SVG surface, ready for future data binding and shape rendering, using D3 v5 version 7.4.4 as declared in the package configuration.