[http://www.foldr.org/~michaelw/emacs/mwe-log-commands.el mwe-log-commands]
by MichaelWeber can be used to demo Emacs to an audience.  When
activated, keystrokes get logged into a designated buffer, along
with the command bound to them.

[[LeWang]] I've forked this on github and made minor-mode and global-minor-mode for it:

[https://github.com/lewang/command-log-mode command-log-mode]

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CategoryCommands
CategoryHelp