How to view the post formats?

Not all themes or editors show post formats, with the following functions.php code, the support is enabled.

add_action( 'after_setup_theme', 'wpsites_child_theme_posts_formats', 11 );
function wpsites_child_theme_posts_formats(){
 add_theme_support( 'post-formats', array(
    'aside',
    'audio',
    'chat',
    'gallery',
    'image',
    'link',
    'quote',
    'status',
    'video',
    ) );
}