The drag/drop part is just supposed to change the rhyme suggestions. So if you you're doing AABB and on line #4, it finds the last word in line #3 and rhymes with that. However if you changed to ABAB line #4 suggestions will now look at line #2. I had a really hard time figuring out a good way to explain that, in the UI, description, and landing page. Agreed its a little confusing. Any suggestions on how to improve that?