diff --git a/UInotes.md b/UInotes.md
index 4cb5077..4d0ed66 100644
--- a/UInotes.md
+++ b/UInotes.md
@@ -7,9 +7,7 @@ the 20 uppermost pixel rows are used for battery state, current time, total time
 
 the 20 lowermost pixel rows are used for 16 pixel tall marquee-style character output of artist/album/track information.
 
-the 20 leftmost pixel columns are currently unused.
-
-the 20 rightmost pixel columns are used for function indicators for the three buttons.
+the 20 leftmost pixel columns and the 20 rightmost pixel columns are used for function indicators for the four buttons surrounding the screen in the corners (refered to by direction - button_nw, button_ne, button_sw, button_se)
 
 the remaining 200x200 pixel frame is used by track artwork, scrolling menus, etc.