PC, win10, MS Word 2013

What is Word's nonprinting symbol that is a small circle (looks like a "degrees" mark)? I haven't found this in other articles, web searches, forums. Is it a new version of "keep with next"?

This comes up regularly when copy/pasting from a gmail draft into Word for the purpose of fixing formatting (gmail often scrambles my formatting even if it looks right before I hit send).

These are helpful but still don't contain the mark I'm looking for: http://wordfaqs.mvps.org/NonprintChars.htm http://wordribbon.tips.net/T005994_Understanding_Nonprinting_Characters.html What does this nonprinting symbol mean in Microsoft Word?

Thank you!