This example demonstrates the simplest possible D3 version 6 setup: it selects the body element and replaces its text with the string "Hello D3 version 6." The page centers that message with massive 13-em font sizing, creating an immediate visual impact. The code imports the `select` function from the D3 library and uses it to target the document body, while also defining a `months` variable based on `d3.timeMonths` with unspecified start, end, and step parameters. The example serves as a minimal starting point, paired with a YouTube tutorial video for new users.