split into two programmatically (perhaps from a menu command), and unsplit
either programmatically or via the wxSplitterWindow user interface.
-Appropriate 3D shading for the Windows 95 user interface is an option.
-This is also recommended for GTK.
+Appropriate 3D shading for the Windows 95 user interface is an option -
+this is also recommended for GTK. Optionally, the sash can be made to
+look more like the native control under MacOS X.
\wxheading{Window styles}