diff --git a/.vs/test(1st chapter)/DesignTimeBuild/.dtbcache b/.vs/test(1st chapter)/DesignTimeBuild/.dtbcache
index 6cb88ce..81cd732 100644
Binary files a/.vs/test(1st chapter)/DesignTimeBuild/.dtbcache and b/.vs/test(1st chapter)/DesignTimeBuild/.dtbcache differ
diff --git a/.vs/test(1st chapter)/v15/.suo b/.vs/test(1st chapter)/v15/.suo
index 8a85e3e..d81810d 100644
Binary files a/.vs/test(1st chapter)/v15/.suo and b/.vs/test(1st chapter)/v15/.suo differ
diff --git a/.vs/test(1st chapter)/v15/Server/sqlite3/storage.ide-shm b/.vs/test(1st chapter)/v15/Server/sqlite3/storage.ide-shm
index 432e026..d4cee48 100644
Binary files a/.vs/test(1st chapter)/v15/Server/sqlite3/storage.ide-shm and b/.vs/test(1st chapter)/v15/Server/sqlite3/storage.ide-shm differ
diff --git a/.vs/test(1st chapter)/v15/Server/sqlite3/storage.ide-wal b/.vs/test(1st chapter)/v15/Server/sqlite3/storage.ide-wal
index 965b812..eb47e80 100644
Binary files a/.vs/test(1st chapter)/v15/Server/sqlite3/storage.ide-wal and b/.vs/test(1st chapter)/v15/Server/sqlite3/storage.ide-wal differ
diff --git a/test(1st chapter)/Program.cs b/test(1st chapter)/Program.cs
index 722dfd3..a43cd5c 100644
--- a/test(1st chapter)/Program.cs	
+++ b/test(1st chapter)/Program.cs	
@@ -261,8 +261,9 @@ namespace test_1st_chapter_
             float ff3 = -0.0f;
             float ff4 = -1.0f;
             WriteLine("{0} {1} {2} {3}\n{4}", ff1 / ff2, ff1 / ff3, ff4 / ff2, ff4 / ff3, ff2 / ff2);
-            WriteLine("hello new world 2");
-                            
+            WriteLine("line for master");
+            WriteLine("line for master2");
+
             ReadKey();
         }