Two methods include the interaction of the system with confining walls.

The dragon snapped, slashed, drove him back, slithered free of the confining walls.

His eyes stared past me-outbeyond the close confining walls.

There seemed no bony structure; the mind, undefended, was growing and pushing the confining walls further out.

The weight of the escape speed tore at her body, pulling her tight against the confining walls.

Loosed from the confining walls, the gigantic column subsides in height, spreading on either side of the tracks.

At length the passage became so straitened that only three fathoms' space was left between the confining walls.

Sam Haymond's laughter pealed out with a heartiness which seemed gauged to outdoor spaces rather than to confining walls.

She didn't like it, the confining walls of the apartments, although she was fascinated by the slowly spinning starfield outside.

Life became very wonderful inside those tight, confining walls, for the spell and grandeur of the whole conception lifted the heart.

What thoughts of a great empire in ruins do not force themselves on one in the confined walls of this little chamber!

Nor was there a detail of it that was not water-worn as far up the confining walls of drab rock as the eyes could see.