The preview follows the key you pick, at desktop, tablet and mobile widths; the pre-commit gate uses the stet you installed.
The dashboard preview renders at desktop width by default, with tablet,
mobile and fit-pane views, and a route field reaches any page. Picking a key
scrolls the page to its text and outlines it, and typing shows the draft in
place. JavaScript sites preview through their own dev server, which the
dashboard can start. The pre-commit gate runs the stet installed in each
checkout, and stet hook remove takes a checkout out of it. Every command
answers --help.