anchor.diff:      imap <S-Left> <Esc>v<Left>
       imap <S-Right> <Esc>v<Right>
   
  +    imap <C-BS> <C-W>
  +    imap <C-Delete> <C-O>dw
  +
       set guioptions-=m  "remove menu bar
       set guioptions-=T  "remove toolbar
       set guioptions-=r  "remove right-hand scroll bar
  
positive.code:       return join(lines, "\n")
      endfunction
  
      map <PageUp> 30<up>
      map <PageDown> 30<down>
  
      map <C-PageUp> :bprev<Return>
      map <C-PageDown> :bnext<Return>
      map <C-w> :bd<Return>
      map <C-q> :q<Return>
  
      map <left> h
  
negative.code: 
      vmap <C-c> "+yi
      vmap <C-x> "+c
      nmap <C-x> "+dd
      imap <C-x> <esc>"+ddi
      vmap <C-v> c<ESC>"+p
      imap <C-v> <C-r><C-o>+
  
  