diff -r b70e2a77dea0 -r 1d912f78fd1d application/main.c
--- a/application/main.c	Sat Dec 05 17:50:22 2020 +0100
+++ b/application/main.c	Sun Dec 06 14:41:37 2020 +0100
@@ -42,7 +42,7 @@
 
 
 void action_menu(UiEvent *event, void *userdata) {
-    
+    printf("action_menu: %s\n", (char*)userdata);
 }
 
 void action_button(UiEvent *event, void *userdata) {
@@ -93,8 +93,8 @@
     ui_onstartup(application_startup, NULL);
     
     // menu
-    ui_menu("File");
-    ui_menuitem("Hello", action_menu, NULL);
+    ui_menu("_File");
+    ui_menuitem("_Hello", action_menu, NULL);
     ui_submenu("Submenu1");
     ui_submenu("Submenu2");
     ui_menuitem("item2", action_menu, NULL);