diff --git a/README.md b/README.md
index baa06dd..1a93a22 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,7 @@ select arduinoFTT.  This will add a corresponding line to the top of your sketch
 * Document windowing functions advantages and disadvantages.
 * Optimize usage and arguments.
 * Add new windowing functions.
+* Spectrum table?
 
 ### API