Update default_opener for 3.x
Update default_opener for 3.x

dit/dit,Autoplectic/dit,dit/dit,dit/dit,dit/dit,Autoplectic/dit,chebee7i/dit,chebee7i/dit,dit/dit,Autoplectic/dit,Autoplectic/dit,chebee7i/dit,Autoplectic/dit,chebee7i/dit