几个有用的命令：

o -- new line and edit

s -- substitute

caw -- change a word

daw -- delete a word

b -- back {a word}

<C-a><C-x> -- add/subtract 1(or number) from number

f -- find char     ; -- find next char

* -- find word under current position

n/N -- next/previous

gU/gu -- change to upper case/lower case

zz -- centers view

In edit mode:

<C-r> -- paste from buffer

<C-r>= -- add some number to position