diff --git a/API.txt b/API.txt
index 6276aa5..2944b0a 100644
--- a/API.txt
+++ b/API.txt
@@ -523,6 +523,12 @@ members:
     ticks, legend etc. will not be recomputed (use setupGrid() to do
     that). You'll probably want to call draw() afterwards.
 
+    You can use this function to speed up redrawing a plot if you now
+    that the axis won't change. Put in the new data with
+    setData(newdata) and call draw() afterwards, and you're good to
+    go.
+    
+
   - getData()
 
     Returns the data currently used. The data series returned are
diff --git a/TODO b/TODO
index 31edb94..870b5f2 100644
--- a/TODO
+++ b/TODO
@@ -40,4 +40,4 @@ error margin indicators
 non-xy based graph types
   - figure out how to integrate them with the rest of the plugin
   - pie charts
-  - bar charts with keys instead of x values
+  - bar charts, keys instead of x values