+wxUniv programs all honour the standard option "--theme" which allows to
+specify the theme to be used by name. Currently there are the following
+themes:
+
+a) win32 -- Windows 95 look and feel
+b) metal -- based on win32 but with gradient backgrounds
+c) gtk -- GTK+ 1.x standard look and feel
+
+Thus, to launch a program using gtk theme you may do "./program --theme=gtk".
+
+It is also possible to change the default theme for all wxUniv applications
+at once by setting the environment variable WXTHEME to the theme name.
+
+5. Documentation and support