Fullscreen Mode: Added a fullscreen option to the resolution settings.
Input Adjustments: * Fixed the key to the "Back" function.
Removed the "Return to Title" function from the key.
Keyboard Shortcuts: Added the following shortcuts:
+ : Close the game.
+ : Toggle between Windowed and Fullscreen mode.
+ : Undo (Same as the "Back" button on the puzzle screen).
+ : Redo (Same as the "Forward" button on the puzzle screen).
Bug Fixes: Fixed an issue where players could not toggle between full-width and half-width characters in the Option > X Font settings.