Update README.md

@@ -30,7 +30,7 @@ i_keyboard has many options (use `i_keyboard -h` to list them) we illustrate som
 
 
     i_keyboard  -d -tFL32 -k abcd -o/toto
     i_keyboard  -d -tFL32 -k abcd -o/toto
 
 
-Creates a channel '/toto' of 4 float values between 0 and 1 and display the pourcentage in text mode.
+Creates a channel '/toto' of 4 float values corresponding to 'a', 'b', 'c', 'd' between 0 and 1 and display the pourcentage in text mode.
 
 
     100%(1.00) [/toto] |
     100%(1.00) [/toto] |
     ^            
     ^            
@@ -38,13 +38,15 @@ Creates a channel '/toto' of 4 float values between 0 and 1 and display the pour
     | [] [] [] []
     | [] [] [] []
      0%(0.000)  >
      0%(0.000)  >
     >|#a| b| c| d|
     >|#a| b| c| d|
+    
+Instead of `-k abcd` you can define the **size** (`-s`) of desired channel and the keys are automatically generated ( max 64).
 
 
 We see the initial values are set to 49% (i.e. 0.5) and we can chenge them with the arrow.
 We see the initial values are set to 49% (i.e. 0.5) and we can chenge them with the arrow.
-You could change the initial value by changing the neutral value (-N).
-You can change the min and max with -m and -M. The default step of one keypressed in 0.004 (~1/256) or 1 with UIN8 type.
-It can be changed with -S.
+You could change the initial value by changing the **neutral value** (`-N`).
+You can change the **min** and **max** with -m and -M. The default **step** of one keypressed in 0.004 (~1/256) or 1 with UIN8 type.
+It can be changed with `-S`.
 
 
-Sometime you do not want intermediate values but only toggle to max and min. Then use -T.
+Sometime you do not want intermediate values but only **toggle** between max and min. Then use `-T`.
 
 
 from oscillator
 from oscillator
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