diff --git a/main.cpp b/main.cpp
index b59e1bf..f4dd12e 100644
--- a/main.cpp
+++ b/main.cpp
@@ -34,10 +34,6 @@ int main()
 	/* test1.addRelation(0, Spouse, 1); */
 	/* test1.addPerson("Venelin", true, 0, 1, {1998, 6, 9}); */
 	/* test1.addPerson("Vasil", true, 0, 1, {2001, 1, 16}); */
-	/* test1.addRelation(2, Brother, 3); */
-	/* test1.addPerson("Maria-Veronika", 2009, 9, 3, 1, 0, 1); */
-	/* test1.addRelation(2, Brother, 4); */
-	/* test1.addRelation(3, Brother, 4); */
 	test1.saveToFile();
 
 	test2.addPerson("Vasil Dimitrov", true, Nobody, Nobody, {1941, 5, 18});
@@ -45,12 +41,10 @@ int main()
 	test2.addRelation(0, Spouse, 1);
 	test2.addPerson("Dimitar", true, 0, 1);
 	test2.addPerson("Nadejda", false, 0, 1, {1972, 12, 15});
-	/* test2.addRelation(2, Brother, 3); */
 	test2.addPerson("Branimira", false);
-	 test2.addRelation(2, Spouse, 4);
+	test2.addRelation(2, Spouse, 4);
 	test2.addPerson("Ioan", true, 2, 4);
 	test2.addPerson("Rumiana", false, 2, 4);
-	/* test2.addRelation(5, Brother, 6); */
 
 	test1.display();
 	test2.display();
diff --git a/person.cpp b/person.cpp
index 74afb71..d91ec3f 100644
--- a/person.cpp
+++ b/person.cpp
@@ -8,7 +8,7 @@
 
 using std::cout;
 
-WINDOW* info_tab;
+static WINDOW* info_tab;
 
 EventTime::EventTime(I16 Year, U8 Month, U16 Day, I8 Hour, I8 Minute)
     : year(Year)
diff --git a/todo.txt b/todo.txt
index 2225f87..ba93c62 100644
--- a/todo.txt
+++ b/todo.txt
@@ -14,6 +14,7 @@ Visualization:
 - horizontal navigation between cousins
 - color on different consoles
 - screen resize
+- empty tree
 
 Compilation
 - static and dynamic ncurses
diff --git a/tree.cpp b/tree.cpp
index 51b9be6..3b866a4 100644
--- a/tree.cpp
+++ b/tree.cpp
@@ -375,6 +375,26 @@ void Tree::removeRelation(const unsigned first, const unsigned second)
 	}
 }
 
+static void displayHelp()
+{
+	WINDOW* help_tab = newwin(LINES, COLS, 0, 0);
+
+	printw("%s\n", "Enter - focus the currently selected person",
+		   "Arrow keys - move the camera",
+		   "H, J, K, L - move the selection",
+		   "I - display info about the selected person");
+
+	mvwaddstr(help_tab, LINES-1, 0, "Press any key to return.");
+
+	wrefresh(help_tab);
+	getch();					/* waint press */
+
+	werase(help_tab);
+	wrefresh(help_tab);			/* todo: dont update */
+	delwin(help_tab);
+
+}
+
 void Tree::display()
 {
 	draw();
@@ -386,6 +406,9 @@ void Tree::display()
 
 		switch(c)
 		{
+		case KEY_F(1):
+			displayHelp();
+			break;
 		case '\n':
 			focused_ = selected_;
 			draw();