The default option is checked.

I have unchecked the option.

I still have the error :

17:51:19	Error: 	"Not Found" (404) at link
www.uved.fr/fileadmin/user_upload/changements-globaux/site/html/racine(M)
(from
www.uved.fr/fileadmin/user_upload/changements-globaux/site/html/1-origines_atmospheres-planetaires_3.html)