>I still have to guess what control does what
>I saw that png in game folder, but there is not written what does what.
I thought they are very self explanatory
Arrow keys for movement,
Esc is cancel,
Space or Enter is select.
The rest are on the PNG you said didn't written what does what.
Also you can press F1 to change keybinding if it bugs you so much.
>This is rpgmaker game, is it not, you could include that script that makes fullscreen with f4.
I mean the maximized window button to the top right works, since I am using an optimized exe file.