diff --git a/TODO.txt b/TODO.txt
index c7db018..4b72015 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -1,7 +1,6 @@
 general:
 
-- Architecture change: make platform files compilable and move main.c to game.h
-  (so that pokitto is .cpp, GB is .ino etc.).
+- Ability to play SFX slower to e.g. give some monsters lower pitch?
 - Rewrite python scripts to C (faster, less bloat).
 - Try to recolor textures and give them a bit more of variety.
 - Make monsters die when squeezed?
@@ -188,6 +187,8 @@ done:
 - if space left, try blurring (lerp) the level background, see how it looks
 - replace textures in distace with constant color for performance (setting)?
 - enemies close to a wall often don't get drawn
+- Architecture change: make platform files compilable and move main.c to game.h
+  (so that pokitto is .cpp, GB is .ino etc.).
 
 scratched:
 - try to make z-buffer 3 line instead of 1D, possibly like this (to keep
diff --git a/settings.h b/settings.h
index 3ce4870..b549cd3 100644
--- a/settings.h
+++ b/settings.h
@@ -4,7 +4,9 @@
   This file contains settings (or setting hints) for the game. Values here can
   fine tune performance vs quality and personalize the final compiled game. Some
   of these settings may be overriden by the specific platform used according to
-  its limitations.
+  its limitations. You are advised to NOT change value in this file directly,
+  but rather predefine them somewhere before this file gets included, e.g. in
+  you personal settings file.
 
   by Miloslav Ciz (drummyfish), 2019