foreach( $related_posts as $post_type => $post_type_related_posts ) {
    # This filters %posttype% from the title
    $title = MRP_get_title( __($options['title'], 'microkids-related-posts'), $post_type );
    if( count( $post_type_related_posts ) ) {
        $output .= "<div id="related-posts-$post_type" class="related-posts-type">n";
        # Create the title with the selected HTML header
        $output .= "<".$options['header_element'].">".$title."</".$options['header_element'].">n";
        $output .= "<ul>n";
        # Add related posts
        foreach( $post_type_related_posts as $related_post ) {
            $output .= "<li>";
            $output .= "<a href="".get_permalink( $related_post->ID )."">".$related_post->post_title."</a>";
            $output .= "</li>n";
        }
        $output .= "</ul></div>n";
    }
    # If there are no related posts for this post type
    else {
        if( !$options['hide_if_empty'] ) {
            $output .= "<div id="related-posts-$post_type" class="related-posts-type">n";
            $output .= "<".$options['header_element'].">".$title."</".$options['header_element'].">n";
            $output .= "<p>".$options['text_if_empty']."</p>n";
            $output .= "</div>";
        }
        else {
            # Show nothing
            return "";
        }
    }
}
$output .= "</div>";
return $output;

$output .= "<a href="".get_permalink( $related_post->ID ."">".$related_post->post_title."</a>";

$output .= "<a class=" THE-CATEGORY-SLUG " href="".get_permalink( $related_post->ID )."">".$related_post->post_title."</a>";

foreach((get_the_category( $related_post->ID )) as $category) {
    $output .= "<a class="$category->slug"  href="".get_permalink( $related_post->ID )."" title="" . $category->cat_name . "">" . $category->cat_name . "</a>";
}

$output .= "<a href="".get_permalink( $related_post->ID )."">".$related_post->post_title."</a>";

$output .= get_post_field('post_content', $related_post->ID);