anchor.diff:  Use with caution!
   =======
   
  +[[query-string-fuzziness]]
   ====== Fuzziness
   
   We can search for terms that are
  
positive.code: 
      _exists_:title
  
  ====== Wildcards
  
  Wildcard searches can be run on individual terms, using `?` to replace
  
negative.code: sufficient to catch 80% of all human misspellings. It can be specified as:
  
      quikc~1
  
  [[avoid-widlcards-fuzzy-searches]]
  [WARNING]
  .Avoid mixing fuzziness with wildcards
  ====
  Mixing <<fuzziness,fuzzy>> and <<query-string-wildcard,wildcard>> operators is
  _not_ supported. When mixed, one of the operators is not applied. For example,
  you can search for `app~1` (fuzzy) or `app*` (wildcard), but searches for
  `app*~1` do not apply the fuzzy operator (`~1`).
  ====
  
  ====== Proximity searches
  
  