#formation.arrangement  a particular arrangement
  supertype:  #arrangement.structure  something made by arranging ordered parts together; the result of arranging; "the roof bore an impressive arrangement of antennas"
  subtype:  #raster  formation consisting of the set of horizontal lines composed of pixels that is used to form an image on a CRT
  subtype:  #rig.formation  formation of masts, spars, sails, etc., on a vessel
     subtype:  #Bermuda_rig__Bermudan_rig__Bermudian_rig__Marconi_rig  a rig of triangular sails for a yacht
     subtype:  #cat_rig__catrig  rig of a catboat
     subtype:  #fore-and-aft_rig  rig in which the principal sails are fore-and-aft
     subtype:  #lateen-rig  the rig on a lateen-rigged sailing vessel
  subtype:  #split.formation  (tenpin bowling) a divided formation of pins left standing after the first bowl; "he was winning until he got a split in the tenth frame"

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