anchor.diff:  
   (**
   
  -## Getting symbolic informaion about whole projects
  +## Getting symbolic information about whole projects
   
   To check whole projects, create a checker, then call `parseAndCheckScript`. In this case, we just check 
   the project for a single script. By specifying a different "projOptions" you can create 
  
positive.code: 
  (**
  OK, so we got an object representation of the type `int * int -> unit`, and we have seen the first 'int'. We can find out more about the
  type 'int' as follows, determining that it is a named type, which is an F# type abbreviation, `type int = int32`
  *)
  
  argTy1.IsNamedType
  argTy1.NamedEntity.IsFSharpAbbreviation // "int"
  
  (**
  We can now look at the right-hand-side of the type abbreviation, which is the type `int32`
  *)
  
  let argTy1b = argTy1.NamedEntity.AbbreviatedType
  
negative.code: Compiler Services: Working with symbols
  ============================================
  
  This tutorial demonstrates how to work with symbols provided by the F# compiler. See also [project wide analysis](project.html)
  for information on symbol references.
  
  > **NOTE:** The API used below is experimental and subject to change when later versions of the nuget package are published.
  
  As usual we start by referencing `FSharp.Compiler.Service.dll`, opening the relevant namespace and creating an instance
  of `InteractiveChecker`:
  