anchor.diff:  * Contains predicate (and right-hand operand)
   * Regular expression predicate
   
  -|https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=StringOperatorExpression[List operations] (left-hand operand)
  +|https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=ListOperatorExpression[List operators] (left-hand operand)
   |
   
   * List element containment predicate (and right-hand operand)
   * List element access
   * List slicing
   
  -|https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=NullOperatorExpression[Null operations] (left-hand operand)
  +|https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=NullOperatorExpression[Null predicates] (left-hand operand)
   |
   
   * Null predicate
  
positive.code: b. their semantics is defined by a syntax transformation to an expression that has an unambiguous operator tree based on the other precedence rules stated in this document.
  ====
  
  
  
  == What others do
  
  
  == Benefits to this proposal
  
  
  == Caveats to this proposal
  
  
  
negative.code: * https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=CaseExpression[Case expressions]
  * https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=ListComprehension[List comprehensions]
  * https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=PatternComprehension[Pattern comprehensions]
  * https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=Reduce[Reduce operator]
  * quantifiers
  * https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=RelationshipsPattern[Pattern predicates]
  * https://raw.githack.com/openCypher/openCypher/master/tools/grammar-production-links/grammarLink.html?p=ParenthesizedExpression[Function invocations]
  