diff --git a/CommandSet.MD b/CommandSet.MD
index 9823396..7101456 100644
--- a/CommandSet.MD
+++ b/CommandSet.MD
@@ -31,7 +31,7 @@ according to the CP's drivers each command bloc was followed by an `usleep(1000)
 1. picture are 128x64 pixels, encoded 1 pixel per bits  
     A byte is displayed not as a 8 pixels Horizontal line (like on a conventionnal bitmap field), but as a 8 pixel vertical column...   
     This can be usefull to draw text, but painfull for graphics encoding.  
-    This means that the byte SCREEN[0] display pixels 0,0 to 0,8 and the byte SCREEN[1] refert to pixels 1,0 to 1,8...   
+    This means that the byte SCREEN[0] display pixels 0,0 to 0,8 and the byte SCREEN[1] refert to pixels 1,0 to 1,8... Low Bit is row 0, high bit is row 7.  
 
 2. All led were "bicolor" and were addressed as 2 pins out from the controler.