Cloudflare fetched the original article and streamed it through HTMLRewriter to apply an entirely new visual system without rebuilding the source page.
// request.cf · coarse context
A page that knows where it met you.
Only coarse request metadata is shown. This demo does not display or persist visitor IP addresses.
The {{User Wikimedia Commons}} template shows that the user is also a user of Wikimedia Commons. It should not be substed. It takes one optional parameter, the name of the user on Commons (only if the user has a different name on Commons). "a page" will never be a redlink due to the nature of cross-project linking, so please check your work by previewing and following the link.