i want to add less and full post to blogger post
http://www. nasa2i7 .com/2015/10/blog-post_79.html
like you notice inside blog post there is read more button (orange) when you click on it the post link becomes like this :
http://www. nasa2i7 .com/2015/10/blog-post_79.html?fullpost
how to do this ? can you help me ?