Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
The book tells about the advantages of Detailed Logging at length, but I don't see how to turn it on.
Logging can be turned on via Administer > System Settings > Misc (Undelete, PDFs, Limits, Logging, Captcha, etc.).
You will find the relevant page on the Drupal demo site here
(NB, i am using the link to the master to give the url longevity)
You will also find explanation in the manual here
Where are the settings for Enabling Details logging? I can't find at xxx/civicrm/admin/setting/misc?reset=1
Required, but never shown