Small addition for the user manual.

doc/manuals/MicroDexed-User_Manual/MicroDexed-User_Manual.md

@@ -93,7 +93,7 @@ If you want to leave a menu point or change to a higher menu, the volume encoder
 
 ---
 > __Hint__:
-> You can translate MD with different options and accordingly some features may or may not be available. This also depends on what kind of microcontroller you use. In > this manual the standard options are used. These are:
+> You can compile MD with several different options and accordingly some features may or may not be available. This also depends on what kind of microcontroller you use. In > this manual the standard options are used. These are:
 > 
 > * Microcontroller: Teensy-3.6 (240 Mhz overclocking)
 > * Teensy audio card (SGTL5000 based audio chip)
@@ -103,6 +103,11 @@ If you want to leave a menu point or change to a higher menu, the volume encoder
 
 If you use the *dual-timbral* engine, in many menus a small <img src="../../images/LCD_characters_green/small_2_inv.png" width="12"/> will appear (right of the <img src="../../images/LCD_characters_green/small_1_inv.png" width="12"/>) instead of the key. To switch between the two engines and change their parameters, simply press the preset encoder.
 
+---
+> __Hint__:
+> MD stores changed values in the internal EEPROM. These changes survive a separation from the power supply. __However, the changed values are only written into the EEPROM when the menu is exited by pressing the volume eincoder (BACK)!__
+---
+
 ### Sound/Bank selection
 
 The most important screen will be the selection for the sounds. The screen displays the selected bank number (top left) and the selected voice number (below). Next to the numbers are the corresponding names. The paramater, which is shown in square brackets, can be changed by turning the preset encoder.