Start trying out relative line numbering

dotfiles/vim/vimrc

 set updatetime=100
 set t_vb=
 set pastetoggle=<F4>
+nmap <F3> :set relativenumber!<CR>
 
 if has('mouse')
   set mouse=a
 set ruler
 set showcmd
 set nowrap
+set relativenumber
 
 if &t_Co > 2 || has("gui_running")
   syntax on