netrw plugin is a great way to browse files and directories
within a Vim session.
netrw supports four ways of displaying files and
directories. That is, there are four liststyles. You can toggle through
these by hitting
I prefer the tree liststyle, which is not the default. I can set the tree
liststyle as the default by adding the following line to my
let g:netrw_liststyle = 3
Now, every time I visit or revisit a
netrw window, I'll see everything
nicely displayed as a tree.