diff --git a/Perl/hsw12_gui.pm b/Perl/hsw12_gui.pm
index 5a95192..68cec1f 100755
--- a/Perl/hsw12_gui.pm
+++ b/Perl/hsw12_gui.pm
@@ -167,9 +167,19 @@ r
    (add/enable commonly used ones, comment out others)
  - use foreach loop to generate 'Preferences' > 'Terminal' > 'Speed' menu
  
-=item V00.2? - Mar 23, 2018
-
- - modernize menubar
+=item V00.23 - Jun 22, 2018
+
+ - improvements/workarounds for experimental support
+   of macOS aqua (instead of XQuartz) using Tcl::pTk::TkHijack
+ 	- use Tk 8 menubar (for native menubar on aqua)
+	- hide main window on aqua (empty)
+	- remove "Quit" from File menu on aqua
+	- workaround: avoid '...' in menu names
+	- Tcl::pTk 0.92 workaround for focusFollowsMouse
+	- use Tk::Ev(…) instead of $Tk::event->…
+	- use fully qualified Tk::Exists rather than Exists
+	- use C<-padx =E<gt> 0> to shrink ENTER, UPLOAD, and CLEAR buttons
+	- bind macro right-click to button 2 on aqua
 
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