anchor.diff:          
       [<Experimental("This FCS API is experimental and subject to change.")>]
       static member Tokenize: text: ISourceText * tokenCallback: (FSharpToken -> unit) * ?langVersion: string * ?filePath: string * ?conditionalCompilationDefines: string list * ?flags: FSharpLexerFlags * ?pathMap: Map<string, string> * ?ct: CancellationToken -> unit
  -
  
positive.code:     val DoesIdentifierNeedQuotation : string -> bool
  
      /// Add backticks if the identifier is a keyword.
      val QuoteIdentifierIfNeeded : string -> string
  
      /// Remove backticks if present.
  
negative.code: 
      /// Keywords paired with their descriptions. Used in completion and quick info.
      val KeywordsWithDescription : (string * string) list
  
      /// All the keywords in the F# language
      val KeywordNames: string list
  