Dark Trick In Vim Advanced trick

Vim

1. Operate on a paragraph

dap delete 1 para
d2ap delete 2 para
vap select a para

2. About the Move command

nnoremap <A-j> :m .+1<CR>== 
nnoremap <A-k> :m .-2<CR>==
inoremap <A-j> <Esc>:m .+1<CR>==gi
inoremap <A-k> <Esc>:m .-2<CR>==gi
vnoremap <A-j> :m '>+1<CR>gv=gv
vnoremap <A-k> :m '<-2<CR>gv=gv
note: 
    1. m(ove) .+1 ----> move to the up a line
    2. == ----> align 
    3. gi ----> jump to the last insert mode postion
    4. gv ----> jump to the last visual mode postion
    5. '< ----> mark the beginning of the selection 
    6. '> ----> mark the end of the selection