Icons, including control prompts. Various improvements and fixes.
1. Added icons of two types.
a) Symbolizing a related action for better intuitive perception.
b) Control prompts (for mouse, keyboard, and Xbox/PlayStation 4 controllers). You can choose between options for gamepads in the settings menu.
2. Last update greatly improved the tutorials, but quietly broke the keyboard and gamepad control of them. Fixed.
3. In addition, you can now hold buttons in tutorials to quickly change values.
4. Performed minor visual changes.
5. Fixed a few minor bugs.