WordPress at a glance
action is not described

comment_on_draft action-hook . WP 1.5.1

Fires when a comment is attempted on a post in draft mode.

Usage

add_action( 'comment_on_draft', 'action_function_name_242' );
function action_function_name_242( $comment_post_ID ){
	// action...
}
$comment_post_ID(int)
Post ID.

Where the hook is called

wp_handle_comment_submission()
comment_on_draft
wp-includes/comment.php 3051
do_action( 'comment_on_draft', $comment_post_ID );

Where the hook is used (in WP core)

Does not used.