diff --git a/README.org b/README.org
index aeff704..6f66985 100644
--- a/README.org
+++ b/README.org
@@ -7,10 +7,13 @@ Get the file, add to load path, and
 #+END_SRC
 
 * Usage
+** Function
 -  =eldoc-box-help-at-point= :: Show the documentation of the symbol at point.
 - =eldoc-box-hover-mode= :: Show documentation upon hover. Note that you need to enable ElDoc mode for this to work.
+** Face
 -  =eldoc-box-border= :: Adjust =:background= of this face for border color.
 - =eldoc-box-body= :: Adjust =:background= of  this face for background color of childframe.
+** Variable
 - =eldoc-box-only-multi-line= :: Set this to non-nil and eldoc-box only display multi-line message in childframe. One line messages are left in minibuffer.
 
 ** Use with eglot