[Plugin: Related Posts Thumbnails] turn off automatic appending ?

I am interested in this part of your description … “You can turn off automatic appending to the end of post and use <?php get_related_posts_thumbnails(); ?> php tag in the Loop of your theme. “

Can you be more specific on how I do this? Thank you.

(BTW, great work on this plugin!)

http://ww.wp.xz.cn/extend/plugins/related-posts-thumbnails/