anchor.diff:      /// None |> Option.map2 (fun x y -> x + y) None = None
       /// None |> Option.map2 (fun x y -> x + y) (Some 5) = None
       /// Some 10 |> Option.map2 (fun x y -> x + y) None = None
  -    /// Some 10 |> Option.map2 (fun x y -> x + y) (Some 5) = Some 15
  -    /// </code></remarks>
  +    /// Some 10 |> Option.map2 (fun x y -> x + y) (Some 5) = Some 15</code></remarks>
       ///
       /// <returns>An option of the input values after applying the mapping function, or None if either input is None.</returns>
       [<CompiledName("Map2")>]
  
positive.code:     /// <remarks>Identical to the built-in <see cref="defaultArg"/> operator, except with the arguments swapped.
      /// <code>
      /// None |> Option.defaultValue 99 = 99
      /// Some 42 |> Option.defaultValue 99 = 42
      /// </code></remarks>
      [<CompiledName("DefaultValue")>]
      val defaultValue: value:'T -> option:'T option -> 'T
  
  
negative.code:     /// <code>
      /// let nullVariable = System.Nullable()
      /// nullVariable |> Option.ofNullable = None
      /// System.Nullable(42) |> Option.ofNullable = Some 42</code></remarks>
      ///
      /// <returns>The result option.</returns>
      [<CompiledName("OfNullable")>]
  