[https://github.com/tarsius/keycast keycast]

Similar to command log mode, this package displays the key press and its associated function on the mode line

Great for learning a new major/minor mode and also screen casting 

To make it work with doom-modeline

{{{
(use-package keycast
  :init
  (add-to-list 'global-mode-string '("" mode-line-keycast))
  (keycast-mode))
}}}

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CategoryCommands
CategoryKeys
CategoryHelp