radiosymmetrical

Clumps of withered grass stood out on the hill-top; the furze bushes were black, and now and then a black shiver crossed the snow as the wind drove flurries of frozen particles before it.

Flair, the butler, drank.[…]On weekdays when we were alone, he would open The Times and fill in the crossword, each clue no sooner read than solved. At weekends he merely read the crossword, then ironed the paper before giving it to Herbie.

Here, however, individual joist ends are underwrapped.