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#### 5.3.1 Closing items

The most basic logging is to keep track of when a certain TODO item was finished. This is achieved with1

         (setq org-log-done 'time)

Then each time you turn an entry from a TODO (not-done) state into any of the DONE states, a line ‘`CLOSED: [timestamp]`’ will be inserted just after the headline. If you turn the entry back into a TODO item through further state cycling, that line will be removed again. If you want to record a note along with the timestamp, use2

         (setq org-log-done 'note)

You will then be prompted for a note, and that note will be stored below the entry with a ‘`Closing Note`’ heading.

In the timeline (see Timeline) and in the agenda (see Weekly/daily agenda), you can then use the `l` key to display the TODO items with a ‘`CLOSED`’ timestamp on each day, giving you an overview of what has been done.

#### Footnotes

[1] The corresponding in-buffer setting is: `#+STARTUP: logdone`

[2] The corresponding in-buffer setting is: `#+STARTUP: lognotedone`