anchor.diff:  57, "Result set created but no records available" 
   58, "Result set created with unpredictable partial results available" 
   59, "Result set created with valid partial results available" 
  -60, "Result set no created: too many records retrieved" 
  +60, "Result set not created: too many maching records" 
   61, "First record position out of range" 
   62, "Negative number of records requested" 
   63, "System error in retrieving records" 
  
positive.code: 90, "Unsupported direction value" 
  91, "Unsupported case value" 
  92, "Unsupported missing value action" 
  100, "Explain not supported" 
  101, "Explain request type not supported (SOAP vs GET)" 
  102, "Explain record temporarily unavailable"
  
negative.code: 32, "Anchoring character in unsupported position" 
  33, "Combination of proximity/adjacency and masking characters not supported" 
  34, "Combination of proximity/adjacency and anchoring characters not supported" 
  35, "Term contains only stopwords" 
  36, "Term in invalid format for index or relation" 
  37, "Unsupported boolean operator" 
  38, "Too many boolean operators in query" 
  