diff --git a/src/Excel2TextDiff/Program.cs b/src/Excel2TextDiff/Program.cs
index 4cd89f7..9a4a31f 100644
--- a/src/Excel2TextDiff/Program.cs
+++ b/src/Excel2TextDiff/Program.cs
@@ -2,6 +2,7 @@
 using CommandLine.Text;
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
 
 namespace Excel2TextDiff
@@ -17,21 +18,25 @@ namespace Excel2TextDiff
         [Option('p', SetName = "diff", Required = false, HelpText = "3rd diff program. default TortoiseMerge")]
         public string DiffProgram { get; set; }
 
+        [Option('f', SetName = "diff", Required = false, HelpText = "3rd diff program argument format. default is TortoiseMerge format:'/base:{0} /mine:{1}'")]
+        public string DiffProgramArgumentFormat { get; set; }
+
         [Value(0)]
         public IList<string> Files { get; set; }
+
+        [Usage()]
+        public static IEnumerable<Example> Examples => new List<Example>
+        {
+            new Example("tranfrom to text", new CommandLineOptions { IsTransform = true, Files = new List<string>{"a.xlsx", "a.txt" } }),
+            new Example("diff two excel file", new CommandLineOptions{ IsDiff = true, Files = new List<string>{"a.xlsx", "b.xlsx"}}),
+            new Example("diff two excel file with TortoiseMerge", new CommandLineOptions{ IsDiff = true, DiffProgram = "TortoiseMerge",DiffProgramArgumentFormat = "/base:{0} /mine:{1}",  Files = new List<string>{"a.xlsx", "b.xlsx"}}),
+        };
     }
 
     class Program
     {
         static void Main(string[] args)
         {
-            //if (args.Length != 2 && args.Length != 3)
-            //{
-            //    Console.WriteLine("Usage:");
-            //    Console.WriteLine("Excel2TextDiff <file1> <file2> [path_of_diff_program]");
-            //    return;
-            //}
-
             var options = ParseOptions(args);
 
             System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
@@ -51,7 +56,7 @@ namespace Excel2TextDiff
             {
                 if (options.Files.Count != 2)
                 {
-                    Console.WriteLine("Usage: Excel2TextDiff -d <excel file 1> <excel file 2> [-p <diff programe>]");
+                    Console.WriteLine("Usage: Excel2TextDiff -d <excel file 1> <excel file 2> ");
                     Environment.Exit(1);
                 }
 
@@ -63,10 +68,11 @@ namespace Excel2TextDiff
                 var tempTxt2 = Path.GetTempFileName();
                 writer.TransformToTextAndSave(options.Files[1], tempTxt2);
 
-                string arg1 = $"/base:{tempTxt1.Replace('\\', '/')}";
-                string arg2 = $"/mine:{tempTxt2.Replace('\\', '/')}";
-                Console.WriteLine(" {0} {1}", arg1, arg2);
-                System.Diagnostics.Process.Start(diffProgame, new string[] { arg1, arg2 });
+                ProcessStartInfo startInfo = new ProcessStartInfo();
+                startInfo.FileName = diffProgame;
+                string argsFormation = options.DiffProgramArgumentFormat ?? "/base:{0} /mine:{1}";
+                startInfo.Arguments = string.Format(argsFormation, tempTxt1, tempTxt2);
+                Process.Start(startInfo);
             }
         }