Template:Category/backlinks-header
From Miniscope
Header cell for the Backlinks section of a category display table. One row, spans both columns. Kept as its own primitive so the markup lives in one place (used by the dispatcher's baked backlinks section and by Category/render-reverse's dynamic path).
Visual styling (background, alignment, smaller font) lives in `resources/ext.semanticschemas.basecontent.css` keyed off the `source-semanticschemas-backlinks-header` class.