Someone

colorscheme darkblue

:set shiftwidth=3
:set tabstop=3

:set smartindent

":set shiftwidth=4 smarttab expandtab autoindent backspace=indent,eol,start
":set shiftwidth=3 autoindent backspace=indent,eol,start
:set shiftwidth=3 smarttab expandtab autoindent backspace=indent,eol,start

:map! <S-space> <C-X><C-O>

:nnoremap <C-Tab> :bnext<CR>
:nnoremap <S-C-Tab> :bprevious<CR>

:inoremap <S-Tab> <C-O><LT><LT>
:nnoremap <Tab> >>
:nnoremap <S-Tab> <LT><LT>
:vnoremap <Tab> >
:vnoremap <S-Tab> <LT>


" This is for vertical indenting
set list
set lcs=tab:\|\ ,extends:#
" NOTE the space char after last backslash.