I don't know whether this is a bug, or something I didn't realize I was making happen.
  Within the text on my page, 225.Poetry.Set Format.The Trochées Of Insanity!, there is a link to 225.Poetry.Set Format.The Grouchy Senryu which I didn't knowingly put there. (It is also the next poem on the list.) It's not on any of my other pages, just this one. When I click "Edit this page" the link isn't in the raw text for me to remove. How did it get there? Could it be because I created one as a Sisterpage from the other (though I don't remember whether I did or not)? But I thought that making a Sisterpage had the same function as moving up one level and creating another Subpage.
  So either I just don't know how I put it there and can remove it, or it's a bug.