Hi! I see the main (top-level) page here is a linear doc, with canvas as a subpage. We don't have a way to publish individual subpages, just the main page with whatever it contains. But from leaflet.pub/home you can hit the "+ new" button and make either a doc or a canvas! So if you want to publish a canvas by itself (like in this example) you'd do that + then publish as looseleaf (or to a publication). Sorry for the confusion! Reach out if you have further q's :)