Site Administrator   Site Administration > Advanced settings Tick "Enable tags functionality"   Go to Site Administration > Appearance > Manage Tags Add one or more standard tags to the Default Collection   Optional: in Book settings, add a standard tag. Note: tagging of Books is independent to tagging of Book chapters. One will work without the other.   Add a new Book chapter Select one or more standard tags from the list or add your own tag View the Book chapter Click on tag which will take you to the Tag index page (If tag was entered in Book settings – Forum activity will be listed) Tagged Book chapters posts will be listed. Links on the Tag index page will take you back to the tagged chapters. Hide the Book activity View the Tag index page. Admin can see the links to the activity and/or individual chapters, but there no visual clue that it’s a hidden activity. This appears to be the case on all activity tagging and is therefore not classed as a bug in this code. Student cannot see any reference to the activity or individual chapters.  **  If a student is NOT enrolled in a course... Links to Book activity and individual chapters do not display on Tag index page.   Note re Tag index page Based on current settings ($exclusivemode in the locallib.php of each module), there needs to be at least 6 tagged entries of any particular type before the index page displays a "Show all..." link. Duplicate a book Make sure all tags on chapters were duplicated