anchor.diff:  
   // Generate
   copyFiles()
  -buildDocumentation()
  +buildDocumentation()
positive.code: let files      = __SOURCE_DIRECTORY__ @@ "../files"
  let data       = __SOURCE_DIRECTORY__ @@ "../content/data"
  let templates  = __SOURCE_DIRECTORY__ @@ "templates/ja"
  let reference  = __SOURCE_DIRECTORY__ @@ "reference"
  let formatting = __SOURCE_DIRECTORY__ @@ "../../packages/FSharp.Formatting.2.3.4-beta/"
  let docTemplate = formatting @@ "templates/docpage.cshtml"
  
  // Where to look for *.cshtml templates (in this order)
  let layoutRoots =
    [ templates
      reference 
      formatting @@ "templates" 
      formatting @@ "templates/reference" ]
  
  
negative.code:   CopyRecursive data (output @@ "data") true |> Log "Copying data files: "
    CopyRecursive files output true |> Log "Copying file: "
    ensureDirectory (output @@ "content")
    CopyRecursive (formatting @@ "styles") (output @@ "content") true 
      |> Log "Copying styles and scripts: "
  
  // Build documentation from `fsx` and `md` files in `docs/content`
  