diff --git a/TODO b/TODO
index ba189b6..ba1abf6 100644
--- a/TODO
+++ b/TODO
@@ -7,7 +7,18 @@ Simple stuff, not required, may not be possible/useful:
 
 
 -   CTS/finder speedups and changes                                 [ ]
+    General ideas:
+        -   everything subprocedure (lots of code)
+
+        -   jit + comparison function (per cts)  generated, call in loop
+
+        -   comparison function (per cts), not generated, call in loop
+
     -   JIT (Generate comparison functions)                         [ ]
+    -   Comparison functions for HSL/XYZ/L*a*b should check for
+        match on each component before calculating the next.
+        (see FindColorsToleranceOptimised)
+
     -   Pass color information in struct                            [ ]
     -   Precalculate screen bitmap in current cts / keep a cache
         to save comparisons                                         [ ]