For lovers these were known as "scribing rings" and used to signify moments which are believed to be to be precious planet life on the lovers.
Beyond your envelope, the guest's name is written. I had left free airline Coast, and traveled by sea, air, and land, and went around the entire world. http://Jkmulti.vip/bbs/board.php?bo_table=free&wr_id=4940563