Bordered with a torus, around which a sculptured riband is entwined, they are crowned by the _cavetto_ cornice surmounted by a flat band (fig.

53); or, as at Semneh, by a square cornice; or, as at Medinet Habu, by a line of battlements.

Thus framed in, the walls looked like enormous panels, each panel complete in itself, without projections and almost without openings.

Windows, always rare in Egyptian architecture, are mere ventilators when introduced into the walls of temples, being intended to light the staircases, as in the second pylon of Horemheb at Karnak, or else to support decorative woodwork on festival days.

The doorways project but slightly from the body of the buildings (fig.