BUS: the rules are making my eyes bleed

[Kerim Aydin via agora-business]

I intend, without objection, to clean Rule 2671 (Horse Multiplier) by
replacing:
      HORSE           1 2 3 O X
      --------------------
with:
      HORSE           1 2 3 O X
      -------------------------

['formatting' category of cleaning]

-G.