anchor.diff:          /// <summary>Parse AppSettings section of XML configuration of given assembly.</summary>
           /// <param name="assembly">assembly to get application configuration from.</param>
           /// <param name="errorHandler">The implementation of IExiter used for error handling. ArgumentException is default.</param>
  -        /// <param name="ignoreMissing">Ignore errors caused by the Mandatory attribute.</param>
  +        /// <param name="ignoreMissing">Ignore errors caused by the Mandatory attribute. Defaults to false.</param>
           member s.ParseAppSettings(assembly : Assembly, ?errorHandler : IExiter, ?ignoreMissing) =
               let configFile = assembly.Location + ".config"
               s.ParseAppSettings(xmlConfigurationFile = configFile, ?errorHandler = errorHandler, ?ignoreMissing = ignoreMissing)
  
positive.code:         /// <param name="inputs">The command line input. Taken from System.Environment if not specified.</param>
          /// <param name="xmlConfigurationFile">If specified, parse AppSettings configuration from given configuration file.</param>
          /// <param name="errorHandler">The implementation of IExiter used for error handling. ArgumentException is default.</param>
          /// <param name="ignoreMissing">Ignore errors caused by the Mandatory attribute.</param>
          /// <param name="ignoreUnrecognized">Ignore CLI arguments that do not match the schema. Defaults to false.</param>
          /// <param name="raiseOnUsage">Treat '--help' parameters as parse errors.</param>
          member s.Parse (?inputs : string [], ?xmlConfigurationFile : string, ?errorHandler : IExiter, ?ignoreMissing, ?ignoreUnrecognized, ?raiseOnUsage) =
              let ignoreMissing = defaultArg ignoreMissing false
              let ignoreUnrecognized = defaultArg ignoreUnrecognized false
  
negative.code:         /// <summary>Parse command line arguments only.</summary>
          /// <param name="inputs">The command line input. Taken from System.Environment if not specified.</param>
          /// <param name="errorHandler">The implementation of IExiter used for error handling. ArgumentException is default.</param>
          /// <param name="ignoreMissing">Ignore errors caused by the Mandatory attribute. Defaults to false.</param>
          /// <param name="ignoreUnrecognized">Ignore CLI arguments that do not match the schema. Defaults to false.</param>
          /// <param name="raiseOnUsage">Treat '--help' parameters as parse errors. Defaults to true.</param>
          member s.ParseCommandLine (?inputs : string [], ?errorHandler: IExiter, ?ignoreMissing, ?ignoreUnrecognized, ?raiseOnUsage) =
  