I then drew some gold lines between the square apertures to give some definition and help separate the four designs.

Below there was a square aperture and a stair of old stone steps which led away down into the bowels of the earth.

The window was wide open and the man was raising muscular hands to swing himself through the square aperture.

Beside this trigger there was a small square aperture through the wood.

Each cell door on this side has a square aperture in it.

The square aperture is perpendicular.

He knocked on the side of the square aperture and it clanged.

Jasper stood looking at the bell rope which came out of a small square aperture at what was the base of the campanile.

It was almost as narrow as a corridor, with a small square aperture, barred by a heavy grating, at the distant end.

These are glimpsed through small square apertures in each side, which also reveal the density of the structures.