title: How to view default zsh settings (HISTSIZE, SAVEHIST, ...)
body: <p>How do I see the current values for all the zsh settings?  </p>
  
  <p>e.g., I don't currently have HISTSIZE and SAVEHIST set, so <code>env | grep HIST</code> and <code>set | grep HIST</code> show nothing.  So then how can I see what default values are being used?</p>