[Orgmode] How to disable log done notes for specific project?

[Water Lin]

I have set the log done time and log done note for my org files using
code:
---------------
(setq org-log-done 'time)
(setq org-log-done 'note)
---------------

The log done time and log done note are very useful while I am editing
my org files. But when I publish the projects, I don't want to publish
these TODO keywords and so does the log done notes.

I used following line to disable export TODO keywords:
---------------
         :todo-keywords nil
---------------

But I don't know how to disable log done notes.

How can I do these? To set the project not to export log done notes, or
to set the project not to mark log done notes?

How?

Thanks

Water Lin


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