Consider the scenario where I want to go through all files in a directory to
make a series of minor, related changes. After editing each file, I can type
something like :e path/to/next/file.md to bring up the next file. That can
get a bit tedious though. Instead, I can load up all the files in the
directory with the args command:
:args path/to/files/*.md
From there, I can use :bnext (or :bn) and :bprev` to more quickly jump
through those files I want to edit.
I can also run :ls to see all the files loaded in to the buffer list at
that point.