H and L change buffers, like :bprevious and :bnext.
X deletes the current buffer, like :bdelete
After each of the above, the list of buffers is displayed at the bottom of the
screen. The current buffer is surrounded with []. Modified buffers are
appended a +.
Note that no splits are created and the action is performed before showing the list of buffers. I find this more usable than the approach taken by the popular BufExplorer and MiniBufExplorer plugins.