diff --git a/lib/VGA_ctrl/todo.txt b/lib/VGA_ctrl/todo.txt
index 6a964e3..7cc2cc4 100644
--- a/lib/VGA_ctrl/todo.txt
+++ b/lib/VGA_ctrl/todo.txt
@@ -4,6 +4,7 @@
 - Make screen width, screen height and FPS register readable (done 2009-11-04)
 
 2009-11-08
-Double-buffering to reduce artifacts on buffer write by host and buffer read by VGA master.
-- currently double-buffer can only be updatetd if msten = 0. Buffer updates should be always possible
+- Double-buffering to reduce artifacts on buffer write by host and buffer read by VGA master.
+  currently double-buffer can only be updatetd if msten = 0. Buffer updates should be always possible
   for large screen change, which need more time than one frame.
+- VGA-INT every n-th buffer change?