diff --git a/button.go b/button.go
index 61c9da5..b23e6c7 100644
--- a/button.go
+++ b/button.go
@@ -1,4 +1,5 @@
 // 12 february 2014
+
 package ui
 
 import (
diff --git a/callbacks_unix.go b/callbacks_unix.go
index e67e7a3..21ae357 100644
--- a/callbacks_unix.go
+++ b/callbacks_unix.go
@@ -1,6 +1,7 @@
 // +build !windows,!darwin,!plan9
 
 // 16 february 2014
+
 package ui
 
 import (
diff --git a/checkbox.go b/checkbox.go
index 0b060df..db488f9 100644
--- a/checkbox.go
+++ b/checkbox.go
@@ -1,4 +1,5 @@
 // 13 february 2014
+
 package ui
 
 import (
diff --git a/combobox.go b/combobox.go
index 009e639..f0afd19 100644
--- a/combobox.go
+++ b/combobox.go
@@ -1,4 +1,5 @@
 // 14 february 2014
+
 package ui
 
 import (
diff --git a/comctl_windows.go b/comctl_windows.go
index 1c3014f..8e3522a 100644
--- a/comctl_windows.go
+++ b/comctl_windows.go
@@ -1,4 +1,5 @@
 // 25 february 2014
+
 package ui
 
 import (
diff --git a/common_windows.go b/common_windows.go
index cb6d2a3..eaa7d34 100644
--- a/common_windows.go
+++ b/common_windows.go
@@ -1,4 +1,5 @@
 // 7 february 2014
+
 package ui
 
 import (
diff --git a/control.go b/control.go
index 2513399..11d9034 100644
--- a/control.go
+++ b/control.go
@@ -1,4 +1,5 @@
 // 11 february 2014
+
 package ui
 
 import (
diff --git a/controls_windows.go b/controls_windows.go
index c50d96d..3836d25 100644
--- a/controls_windows.go
+++ b/controls_windows.go
@@ -1,4 +1,5 @@
 // 9 february 2014
+
 package ui
 
 import (
diff --git a/delegate_darwin.go b/delegate_darwin.go
index 4c06871..e914453 100644
--- a/delegate_darwin.go
+++ b/delegate_darwin.go
@@ -1,4 +1,5 @@
 // 27 february 2014
+
 package ui
 
 import (
diff --git a/dialog.go b/dialog.go
index f24927b..5173a5d 100644
--- a/dialog.go
+++ b/dialog.go
@@ -1,4 +1,5 @@
 // 7 february 2014
+
 package ui
 
 import (
diff --git a/dialog_darwin.go b/dialog_darwin.go
index 7021a30..677b153 100644
--- a/dialog_darwin.go
+++ b/dialog_darwin.go
@@ -1,4 +1,5 @@
 // 2 march 2014
+
 package ui
 
 import (
diff --git a/dialog_unix.go b/dialog_unix.go
index 0ce9fe8..8564efd 100644
--- a/dialog_unix.go
+++ b/dialog_unix.go
@@ -1,6 +1,7 @@
 // +build !windows,!darwin,!plan9
 
 // 7 february 2014
+
 package ui
 
 import (
diff --git a/dialog_windows.go b/dialog_windows.go
index 29124a2..4627110 100644
--- a/dialog_windows.go
+++ b/dialog_windows.go
@@ -1,4 +1,5 @@
 // 7 february 2014
+
 package ui
 
 import (
diff --git a/grid.go b/grid.go
index 7da5e58..007a04a 100644
--- a/grid.go
+++ b/grid.go
@@ -1,4 +1,5 @@
 // 25 february 2014
+
 package ui
 
 import (
diff --git a/gtkcalls_unix.go b/gtkcalls_unix.go
index 811287b..5d3702d 100644
--- a/gtkcalls_unix.go
+++ b/gtkcalls_unix.go
@@ -2,6 +2,7 @@
 // TODO is there a way to simplify the above? :/
 
 // 16 february 2014
+
 package ui
 
 import (
diff --git a/gtkcasts_unix.go b/gtkcasts_unix.go
index 75f2d96..09ba9ef 100644
--- a/gtkcasts_unix.go
+++ b/gtkcasts_unix.go
@@ -1,6 +1,7 @@
 // +build !windows,!darwin,!plan9
 
 // 17 february 2014
+
 package ui
 
 import (
diff --git a/init.go b/init.go
index b24e2fc..b4214ac 100644
--- a/init.go
+++ b/init.go
@@ -1,4 +1,5 @@
 // 11 february 2014
+
 package ui
 
 // Go sets up the UI environment and runs main in a goroutine.
diff --git a/init_windows.go b/init_windows.go
index e27bea0..9ccd5df 100644
--- a/init_windows.go
+++ b/init_windows.go
@@ -1,4 +1,5 @@
 // 8 february 2014
+
 package ui
 
 import (
diff --git a/label.go b/label.go
index 6b91f75..76344f9 100644
--- a/label.go
+++ b/label.go
@@ -1,4 +1,5 @@
 // 14 february 2014
+
 package ui
 
 import (
diff --git a/lineedit.go b/lineedit.go
index 4234f7f..2321227 100644
--- a/lineedit.go
+++ b/lineedit.go
@@ -1,4 +1,5 @@
 // 14 february 2014
+
 package ui
 
 import (
diff --git a/listbox.go b/listbox.go
index cdb6c2d..3fe6649 100644
--- a/listbox.go
+++ b/listbox.go
@@ -1,4 +1,5 @@
 // 14 february 2014
+
 package ui
 
 import (
diff --git a/listbox_darwin.go b/listbox_darwin.go
index 251b256..acb68df 100644
--- a/listbox_darwin.go
+++ b/listbox_darwin.go
@@ -1,4 +1,5 @@
 // 2 march 2014
+
 package ui
 
 import (
diff --git a/listbox_unix.go b/listbox_unix.go
index d3615f1..96db13c 100644
--- a/listbox_unix.go
+++ b/listbox_unix.go
@@ -1,6 +1,7 @@
 // +build !windows,!darwin,!plan9
 
 // 17 february 2014
+
 package ui
 
 import (
diff --git a/menus_windows.go b/menus_windows.go
index 02ad374..4c7809b 100644
--- a/menus_windows.go
+++ b/menus_windows.go
@@ -1,4 +1,5 @@
 // 10 february 2014
+
 package ui
 
 import (
diff --git a/objc_darwin.go b/objc_darwin.go
index 6d9ce8e..5fdb896 100644
--- a/objc_darwin.go
+++ b/objc_darwin.go
@@ -1,4 +1,5 @@
 // 28 february 2014
+
 package ui
 
 import (
diff --git a/prefsize_darwin.go b/prefsize_darwin.go
index e935bff..8b56ef7 100644
--- a/prefsize_darwin.go
+++ b/prefsize_darwin.go
@@ -1,4 +1,5 @@
 // 1 march 2014
+
 package ui
 
 // #cgo LDFLAGS: -lobjc -framework Foundation -framework AppKit
diff --git a/prefsize_unix.go b/prefsize_unix.go
index b9114fc..7ee9e2a 100644
--- a/prefsize_unix.go
+++ b/prefsize_unix.go
@@ -1,6 +1,7 @@
 // +build !windows,!darwin,!plan9
 
 // 23 february 2014
+
 package ui
 
 import (
diff --git a/prefsize_windows.go b/prefsize_windows.go
index c6f1ca2..5a34032 100644
--- a/prefsize_windows.go
+++ b/prefsize_windows.go
@@ -1,4 +1,5 @@
 // 24 february 2014
+
 package ui
 
 import (
diff --git a/progressbar.go b/progressbar.go
index 000996c..da89d1a 100644
--- a/progressbar.go
+++ b/progressbar.go
@@ -1,4 +1,5 @@
 // 25 february 2014
+
 package ui
 
 import (
diff --git a/stack.go b/stack.go
index 2ead5dc..c6335ef 100644
--- a/stack.go
+++ b/stack.go
@@ -1,4 +1,5 @@
 // 13 february 2014
+
 package ui
 
 import (
diff --git a/stdfont_windows.go b/stdfont_windows.go
index 99c2841..c97e937 100644
--- a/stdfont_windows.go
+++ b/stdfont_windows.go
@@ -1,4 +1,5 @@
 // 10 february 2014
+
 package ui
 
 import (
diff --git a/stdwndclass_windows.go b/stdwndclass_windows.go
index 4afe1c8..727158d 100644
--- a/stdwndclass_windows.go
+++ b/stdwndclass_windows.go
@@ -1,4 +1,5 @@
 // 8 february 2014
+
 package ui
 
 import (
diff --git a/sysdata.go b/sysdata.go
index 02fda39..869ed0a 100644
--- a/sysdata.go
+++ b/sysdata.go
@@ -1,4 +1,5 @@
 // 11 february 2014
+
 package ui
 
 import (
diff --git a/sysdata_darwin.go b/sysdata_darwin.go
index f865c9f..5b2f126 100644
--- a/sysdata_darwin.go
+++ b/sysdata_darwin.go
@@ -1,4 +1,5 @@
 // 1 march 2014
+
 package ui
 
 import (
diff --git a/sysdata_unix.go b/sysdata_unix.go
index 91b301c..76667ac 100644
--- a/sysdata_unix.go
+++ b/sysdata_unix.go
@@ -1,6 +1,7 @@
 // +build !windows,!darwin,!plan9
 
 // 16 february 2014
+
 package ui
 
 import (
diff --git a/sysdata_windows.go b/sysdata_windows.go
index 5ef9209..0a526ba 100644
--- a/sysdata_windows.go
+++ b/sysdata_windows.go
@@ -1,4 +1,5 @@
 // 11 february 2014
+
 package ui
 
 import (
diff --git a/uitask_darwin.go b/uitask_darwin.go
index cbc604f..79d582e 100644
--- a/uitask_darwin.go
+++ b/uitask_darwin.go
@@ -1,4 +1,5 @@
 // 28 february 2014
+
 package ui
 
 import (
diff --git a/uitask_unix.go b/uitask_unix.go
index 1ccc621..7d68057 100644
--- a/uitask_unix.go
+++ b/uitask_unix.go
@@ -1,6 +1,7 @@
 // +build !windows,!darwin,!plan9
 
 // 16 february 2014
+
 package ui
 
 import (
diff --git a/uitask_windows.go b/uitask_windows.go
index c8e94f2..58d5a6b 100644
--- a/uitask_windows.go
+++ b/uitask_windows.go
@@ -1,4 +1,5 @@
 // 11 february 2014
+
 package ui
 
 import (
diff --git a/unmigrated/cursors_windows.go b/unmigrated/cursors_windows.go
index 3a45391..a275ebe 100644
--- a/unmigrated/cursors_windows.go
+++ b/unmigrated/cursors_windows.go
@@ -1,4 +1,5 @@
 // 8 february 2014
+
 package ui
 
 import (
diff --git a/unmigrated/icons_windows.go b/unmigrated/icons_windows.go
index f45291a..85ccad1 100644
--- a/unmigrated/icons_windows.go
+++ b/unmigrated/icons_windows.go
@@ -1,4 +1,5 @@
 // 8 february 2014
+
 package ui
 
 import (
diff --git a/unmigrated/main_windows.go b/unmigrated/main_windows.go
index afe6d3c..1167b07 100644
--- a/unmigrated/main_windows.go
+++ b/unmigrated/main_windows.go
@@ -1,6 +1,7 @@
 // +build ignore
 
 // 7 february 2014
+
 package ui
 
 import (
diff --git a/window.go b/window.go
index f09116d..868696c 100644
--- a/window.go
+++ b/window.go
@@ -1,4 +1,5 @@
 // 11 february 2014
+
 package ui
 
 import (
diff --git a/windows_windows.go b/windows_windows.go
index 9ed12f9..f626382 100644
--- a/windows_windows.go
+++ b/windows_windows.go
@@ -1,4 +1,5 @@
 // 8 february 2014
+
 package ui
 
 import (