Evidently I don’t mean Edit => Objects => Convert Line to Shape
I drew a bezier curve, and placed the end point as close as possible to the starting point. Then I wanted to fill its interior, but since it was a Curve (and not a shape), it wasn’t fill-able.
So I tried converting it to a Shape (Edit => Objects => Convert Line To Shape). That enabled the fill inspector, but filling filled the outline of the shape, not the interior of the shape.
Is there a way to say “join start and end points and make this a closed curve” that can be filled?