diff --git a/README.md b/README.md
index c0e3c5c..ba4a70f 100644
--- a/README.md
+++ b/README.md
@@ -74,4 +74,13 @@ $ new_name.jpg                    ; Create a new file with name
 ``` 
 # 3                               ; Layer 3
 # ?                               ; Layer 1
-``` 
\ No newline at end of file
+``` 
+
+#Units
+``` 
+5                                 ; 5px
+5w                                ; 5% of canvas width
+7h                                ; 7% of canvas height
+5s                                ; Brush speed
+{5h - 5s}                         ; 5% of canvas width, minus brush speed
+```