EntryCount: list (2-byte one-based item count)
  KybdType: 2-byte integer (decimal)
  OldMods: 1-byte integer (hex)
  OldCode: 1-byte integer (decimal)
  MaskMods: 1-byte integer (hex)
  MaskCode: 1-byte integer (decimal)
  NewMods: 1-byte integer (hex)
  NewCode: 1-byte integer (decimal)