A page with a very long title that should wrap neatly in the sidebar, the breadcrumbs, the tab bar and the previous and next buttons

This page exists for its title. Check it in the sidebar (it should wrap), in the "Previous" and "Next" cards (they truncate), in the browser tab, and on a phone.

A heading that is also quite long so that the On this page rail has to wrap it over more than one line#

Short body.