The Second Page
You clicked an entry in the navigation and the URL gained one segment. Nothing else about the page changed: same slate, same author, same chip renderer. That is all a sub-page is.
Where This Came From
A file named Proof.chext, sitting next to Home.chext in the same pages directory. The title above the navigation entry was derived from the filename. No other configuration exists for this page.
Home is the bare slate URL
Sub-pages append one lowercased segment. Home is the only page whose link is the slate itself.
The navigation only appears when a slate has more than one page, or when you are editing. A single page slate shows no chrome for a feature it is not using.
The Bit That Is Not Finished
Markdown export via a .md suffix works on sub-pages, but only under the numeric slate URL form. The handle and slug form does not match sub-paths in the server route pattern, so appending .md to this page's pretty URL does nothing. The changelog entry for 3 April 2026 says sub-page markdown works. It does. Just not on the URL most people would try.
