diff --git a/README.md b/README.md
index 556039e..12d35b0 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,7 @@ the bytes in a section map to the following aspects of the tracker and [audio de
 * Arrow key right, or `l`: move cursor to next nibble
 * `Ctrl` or `+`: increment nibble
 * `Alt` or `-`: decrement nibble
+* `0` to `9` and `a` to `f`: assign value to nibble
 
 ### nibble dice references
 
@@ -63,9 +64,9 @@ the bytes in a section map to the following aspects of the tracker and [audio de
 
 ### possible improvements
 
-* keys for setting the value of a nibble?
 * midi output?
 * ~~automatically center interface on screen~~ (done!)
+* ~~keys for setting the value of a nibble?~~ (done!)
 
 ## darena