+6.3 setting sample for browse
+
+ If you have browse-url.el (included in Gnus 5.*, September Gnus and
+Emacs 19.30 or later), you can use URL button in
+mime/viewer-mode. Following is setting sample:
+
+======================================================================
+(setq browse-url-browser-function
+ (if (eq window-system 'x)
+ 'browse-url-netscape
+ 'browse-url-w3))
+(autoload browse-url-browser-function "browse-url"
+ "Ask a WWW browser to show a URL." t)
+======================================================================
+