anchor.diff:  groupMapBlock,Y,Y,Y,Y,Y,X,X,Y,Y,Y,X,Y
   mapContent,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
   rangeContent,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
  -someBlock,Y,Y,Y,Y,Y,X,X,Y,Y,Y,X,Y
  -everyBlock,Y,Y,Y,Y,Y,X,X,Y,Y,Y,X,Y
  +someBlock,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,N,Y
  +everyBlock,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,N,Y
   one,Y,Y,Y,Y,N,X,X,N,N,N,X,N
   only,Y,Y,Y,Y,N,N,N,N,N,N,N,N
   ,,,,,,,,,,,,
  
positive.code: property,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
  get,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
  with,Y,Y,Y,Y,Y,X,X,Y,Y,Y,X,Y
  has,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
  if,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
  default,Y,Y,Y,Y,Y,X,X,N,N,N,N,N
  
negative.code: range(end),Y,Y,?,Y,Y,X,X,Y,Y,Y,X,Y
  "range(start, end)",Y,Y,?,N,N,X,X,N,Y,N,X,N
  ,,,,,,,,,,,,
  asArray(ranged),N,N,N,N,N,X,X,N,N,N,X,N
  asObject(map),N,N,N,N,N,X,X,N,N,N,X,N
  asSet(ranged),N,N,N,N,N,X,X,N,N,N,X,N
  asMap(object),Y,Y,Y,Y,Y,X,X,N,N,N,X,N
  asMap(items),N,N,N,N,N,X,X,N,N,N,X,N
  ,,,,,,,,,,,,
  evaluate,Y,Y,Y,Y,Y,X,X,N,N,N,N,N