Listing your open buffers

It’s easy to lose track of which buffers are loaded. So, Vim provides a command for listing them: :ls.

Give this a try in the editor.

• First, list which buffers are available with :ls — you should see that only the demo buffer is loaded.
• Then, open the file a.txt with :e a.txt, and list the buffers again — this time, you should see both demo and a.txt.
• Repeat the process for b.txt and c.txt.