User blog comment:Kirkburn/Technical Update: August 24, 2015/@comment-5558012-20150824225904/@comment-1757994-20150825031006

Post-It notes are the things you stick on your refrigerator, your monitor, etc, to remind you buy milk on the way home from work. "Flags" are the semi-translucent things you stick on the edge of pages in a book to tabulate it or maybe by the signature line of a letter to say "Sign here ==>." But, yeah, I think only 3M calls them "flags." Everyone else just calls them "those Post-It things."