title: What do the symbols mean after running :ls in Vim?
body: <p>After running the list buffers command (<code>:ls</code>) in Vim, what do the symbols displayed before some buffers mean? I know the percent sign (<code>%</code>) indicates the currently visible buffer. However, I also see the hash sign (<code>#</code>), and I can't figure out what that means. Googling this has proved fruitless.</p>