- =eldoc-box-help-at-point= :: Show the documentation of the symbol at point.
- =eldoc-box-hover-mode= :: Show documentation upon hover. Note that you need to enable ElDoc mode for this to work.
- =eldoc-box-border= :: Adjust =:background= of this face for border color.
- =eldoc-box-body= :: Adjust =:background= of this face for background color of childframe.
- =eldoc-box-only-multi-line= :: Set this to non-nil and eldoc-box only display multi-line message in childframe. One line messages are left in minibuffer.