This example demonstrates the minimal setup required to render text with D3 version 7. It shows the string "Hello D3 version 7" centered on a blank page, using a 13em font size. The code imports the `select` function from the D3 library and applies it to the document body to set the text content, leveraging the library's DOM manipulation API. The page loads D3 from the unpkg CDN and the custom script from a local bundle.