This example displays the text “Hello D3 version 7” in the center of the page using a font size of 13em. The visualization simply renders static text without any interaction or animation, serving as a minimal starter template for D3 projects. The code imports the `select` function from D3 version 7.8.5 (loaded from the unpkg CDN) and calls `select('body').text(...)` to set the content of the HTML body element. The rendering relies on the browser’s default CSS styling, with the body configured for centered alignment.