Added a third way of playing games: Keyboard only

Author: dionoid

docs/library/m2000.md

@@ -79,14 +79,19 @@ When playing P2000T games using the M2000 core, you will notice that **every** P
 
 While the P2000T didn't have any joystick ports, there was a third-party company back in the '80s who was selling I/O cartridges to which you could connect up to 2 joysticks. These cartridges basically simulated actual key presses and that is exactly what the Joypad is doing in the M2000 core.
 
-Playing P2000T games using the M2000 core usually works best in one of these two ways:
+Playing P2000T games using the M2000 core usually works best in one of these three ways:
 
-1. Using both **Keyboard** and **Joypad**.
-Use the **Keyboard** to answer the game's Yes/No questions and for things like entering the number of players or typing your name for the highscore list. Then switch to the **Joypad** during actual game play.
+1. Using **Keyboard only**
+This basically means that you play the P2000T games like most people did back in the day. Do note that because of the positional key mapping, not all keys you type will display the character you expect. However, during game-play you probably won't ever notice this.
 This way of playing works best when the core is in **'Game Focus'** mode, which allows the core to take precedence in inputs. The easiest way to automatically enable 'Game Focus' mode for the M2000 core is in **Settings > Input** where you set the option called **Auto Enable 'Game Focus' Mode** to `Detect`. Or correspondingly in retroarch.cfg set `input_auto_game_focus = "2"`. Be aware that the default hotkey for toggling the **Game Focus** mode is the **Scroll Lock** key, which might not be present on your keyboard. If that's the case, you'll need to remap it - for example to the **Tab** key.
 
-2. Using **Joypad only.**
+2. Using both **Keyboard** and **Joypad**
+Use the **Keyboard** to answer the game's Yes/No questions and for things like entering the number of players or typing your name for the highscore list. Then switch to the **Joypad** during actual game play.
+This way of playing also works best when the core is in **'Game Focus'** mode.
+
+3. Using **Joypad only.**
 This requires the use of the On-Screen Key Selector to enter the number of players or to answer Y/N questions. See the description below on how to use the On-Screen Key Selector.
+For this way of playing the core doesn't have to be in **'Game Focus'** mode.
 
 ### On-Screen Key Selector