Enter word under cursor into cmdline:
CTRL-R CTRL-W
(:help c_CTRL-R)

Rewrap text (reformat):
gq

Remove duplicates from file:
vim ~/.ssh/authorized_keys +":sort u|wq"

N ctrl-^ goes to buffer N

Centre current line on screen:
zz

Newrw:
- fixed on left: :20Lexplore
- change to tree: i
- toggle .hidden files: gh



Config
======

Start Vim without reading .vimrc:
vim -u NONE

Minimal sane config:
set encoding=utf-8
set nocompatible
set background=dark
set hidden