diff --git a/futureplans.md b/futureplans.md
index 01c05ac..a4c6c2d 100644
--- a/futureplans.md
+++ b/futureplans.md
@@ -104,6 +104,8 @@ big dumb things:
 - listboxes should have horizontal scrollbars on all platforms; this is way too hard on OS X and doesn't work; my code is in experiments/
 	- also moved the Windows code there for the sake of efficiency
 	- GTK+ works just fine though
+- window sizes need to not include the window decoration; while Mac OS X and GTK+ both obey this, I've only had issues with Windows; check the experiments/ folder
+	- also will need to be documented in window.go
 
 specifics:
 
diff --git a/sysdata_unix.go b/sysdata_unix.go
index c9be614..23f29b2 100644
--- a/sysdata_unix.go
+++ b/sysdata_unix.go
@@ -264,6 +264,8 @@ func (s *sysData) setWindowSize(width int, height int) error {
 	ret := make(chan struct{})
 	defer close(ret)
 	uitask <- func() {
+		// does not take window geometry into account (and cannot, since the window manager won't give that info away)
+		// thanks to TingPing in irc.gimp.net/#gtk+
 		gtk_window_resize(s.widget, width, height)
 		ret <- struct{}{}
 	}
diff --git a/todo.md b/todo.md
index 8926994..5f83c2b 100644
--- a/todo.md
+++ b/todo.md
@@ -3,7 +3,6 @@ important things:
 - make sure mouse events trigger when we move the mouse over an Area with a button held on OS X
 
 super ultra important things:
-- window sizes are inconsistent and wrong: we need to see on which platforms the titlebars/borders/etc. count...
 - formalize what happens if Modifiers by themselves are held
 	- OS X: find out if multiple DIFFERENT modifiers released at once produces multiple events
 	- in general, figure out what to do on multiple events, period