diff --git a/25_sdl_input_app.txt b/25_sdl_input_app.txt
index 9214d1e..8145b86 100644
--- a/25_sdl_input_app.txt
+++ b/25_sdl_input_app.txt
@@ -1,4 +1,9 @@
 
+Készítsünk egy újat / fejlesszük tovább a MainScene osztályt, amely a benne tárolt 
+Sprite-ot w, a, s, d gombok lenyomására képes a megfelelő irányogba mozgatni,
+és a kamerát is átméretezi, az ablak átméretezésekor.
+
+Az UML diagram:
 
 |---------------------------------------------------------------------------------------|
 | class MainScene : public Scene                                                        |
@@ -21,17 +26,13 @@
 | + bool _right                                                                         |
 |---------------------------------------------------------------------------------------|
 
+A függvények pszeudokódja:
 
-#include "main_scene.h"
-
-#include "renderer.h"
-#include "rect2.h"
-
-#include <SDL.h>
+----------------------------------------------------------------------------
 
 void event(const SDL_Event &ev):
 	switch (ev.type):
-		case SDL_WINDOWEVENT::
+		case SDL_WINDOWEVENT:
 			switch (ev.window.event):
 				case SDL_WINDOWEVENT_SIZE_CHANGED::
 					int width = ev.window.data1
@@ -40,13 +41,9 @@ void event(const SDL_Event &ev):
 					_camera->viewport = Rect2(0, 0, width, height)
 
 					break
-				
-			
-
 			break
 		
-		case SDL_KEYDOWN::
-
+		case SDL_KEYDOWN:
 			if (ev.key.keysym.scancode == SDL_SCANCODE_A):
 				_left = true
 			 else if (ev.key.keysym.scancode == SDL_SCANCODE_W):
@@ -56,10 +53,9 @@ void event(const SDL_Event &ev):
 			 else if (ev.key.keysym.scancode == SDL_SCANCODE_D):
 				_right = true
 			
-
 			break
 		
-		case SDL_KEYUP::
+		case SDL_KEYUP:
 
 			if (ev.key.keysym.scancode == SDL_SCANCODE_A):
 				_left = false
@@ -70,29 +66,28 @@ void event(const SDL_Event &ev):
 			 else if (ev.key.keysym.scancode == SDL_SCANCODE_D):
 				_right = false
 			
-
 			break
 		
-	
+Itt csak letároljuk, hogy mely gombok vannak ép lenyomva.
 
+----------------------------------------------------------------------------
 
 void update(float delta):
 	if (_up):
 		_sprite->set_y(_sprite->get_y() - 50 * delta)
 	
-
 	if (_down):
 		_sprite->set_y(_sprite->get_y() + 50 * delta)
 	
-
 	if (_left):
 		_sprite->set_x(_sprite->get_x() - 50 * delta)
 	
-
 	if (_right):
 		_sprite->set_x(_sprite->get_x() + 50 * delta)
 	
+Itt mozgatjuk a sprite-ot.
 
+----------------------------------------------------------------------------
 
 void render():
 	Renderer::get_singleton()->clear()
@@ -101,6 +96,7 @@ void render():
 
 	Renderer::get_singleton()->draw_sprite(_sprite)
 
+----------------------------------------------------------------------------
 
 MainScene():
 	_camera = new Camera()
@@ -113,6 +109,7 @@ MainScene():
 	_left = false
 	_right = false
 
+----------------------------------------------------------------------------
 
 ~MainScene():
 	_texture->free()
@@ -123,3 +120,4 @@ MainScene():
 	delete _image
 	delete _camera
 
+----------------------------------------------------------------------------