does plain Jane vanilla WordPress site have the ability to create posts that are children or attachments of other posts. I am seeing code in a theme that selects the children of a post where the post type is attachment. I am wondering how to create these attachments for how to edit the already existing attachments? Is this native to WP or is this functionality only available via some sort of plugin?
$attachments = get_children(array('post_parent' => $post->ID, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID'));