Bright, pale interior. A bright blue lozenge suspended in mid-air. Held up by ropes. Not lozenge, poly-something, polygon, polyhedron... What is it, some kind of art-work? Like a piece of sky. Imported from the South of France. No, wait, it's a dust-sheet - because of those workmen on the roof - in case anything falls. A dust-sheet. Shame. I like it as an art-work. They ought to keep it.