--- cnf/ini/english/linux.orig	2012-11-17 20:42:44.000000000 +0900
+++ cnf/ini/english/linux	2012-11-24 02:20:24.000000000 +0900
@@ -42,6 +42,8 @@
 !***Varkon will display the file $VARKON_DOC/no_html_viewer.txt
 !***in a list window.
 !*
+varkon.html_viewer:             xdg-open
+!
 !***Suse Linux with KDE can use Konqueror
 !varkon.html_viewer:             konqueror
 !