anchor.diff:  .Synopsis:
   [source, sql]
   ----
  -GREATEST(expression<1>, expression<2>, ...)
  +GREATEST(
  +    expression, <1>
  +    expression, <2>
  +    ...)
   ----
   
   *Input*:
  
positive.code: .Synopsis:
  [source, sql]
  ----
  NVL(expression<1>, expression<2>)
  ----
  
  *Input*:
  
negative.code: .Synopsis:
  [source, sql]
  ----
  ISNULL(
      expression, <1>
      expression) <2>
  ----
  
  *Input*:
  