diff --git a/v4/main.cpp b/v4/main.cpp
index 79633dc..8a8ec17 100644
--- a/v4/main.cpp
+++ b/v4/main.cpp
@@ -7,7 +7,7 @@
 
 int main() {
   std::cout
-    << test_ctx_Controller_executeFunctions_set()
+    << test_ctx_Controller_executeFunctions_registerFunction_set()
     << std::endl
     << test_ctx_Controller_processQueue()
     << std::endl
@@ -77,7 +77,25 @@ int main() {
     << std::endl
     ;
 
+  ctx_Controller<memory_Context> ctrl(memory_createContext());
+  ctrl.registerFunctions({
+    cli_exit,
+    cli_goOn,
+  });
   /*
+    cli_greetUser,
+    cli_promptSecondItemSelection,
+    cli_reportMatchedItems,
+    cli_reportMismatchedItems,
+    cli_reportVictory,
+    cli_selectItem,
+    cli_showHelp,
+    memory_detectMismatchedItems,
+    memory_detectVictory,
+    memory_generateConstPlayfield,
+    memory_hideMatchingItems,
+    memory_selectItem,
+  ])
 
   auto c = shell_createContext();
   c.cCLI = cli_createContext();