title: VIM: available shortcuts?
body: <p>I use many shortcuts for my work in vim.
  Other shortcuts are taken by plugins.</p>
  
  <p>Sometimes I would like to add a shortcut for a new command but note afterwards that the shortcut was already taken.</p>
  
  <p>Is there a way to see a list of all available shortcuts in VIM?
  (all ctrl-shift-alt shortcuts)</p>