Filter Hook: Filters the comment batch size for updating the comment type.

Action Hook: Fires when a comment reply is attempted to an unapproved comment.

Filter Hook: Filters whether an empty comment should be allowed.

Action Hook: Fires immediately after the `do_pings` event to hook services individually.

Filter Hook: Filters the arguments used to query comments in get_page_of_comment().

Action Hook: Fires before the comment is tested for disallowed characters or words.

Filter Hook: Filters duplicate comment error message.

Filter Hook: Filters the comment flood error message.