(to simulate includes): Tools like wget or curl can fetch the SHTML via a local server to retrieve the fully rendered page.
Arthur was a digital archaeologist of sorts. He spent his days navigating the "Rotting Web"—the millions of abandoned .shtml pages from the late nineties that still drifted in the backwaters of the internet. Most of them were broken, their images replaced by gray "X" boxes, but Arthur loved the text. To him, the text was a ghost that refused to leave. One rainy Tuesday, Arthur stumbled upon a site titled The Grand Library of Nowhere
They allow developers to insert dynamic elements—such as a live clock, a hit counter, or a shared header/footer—without using more complex languages like PHP or ASP.