Howdy friends, Chapter A.1 Hooks of the Org Manual reads, in its entirety:
"Org has a large number of hook variables for adding functionality. This appendix illustrates using a few. A complete list of hooks with documentation is maintained by the Worg project at <https://orgmode.org/worg/doc.html#hooks>." (I have the manual for Org 9.3, the online version of the chapter is newer, but identical at this point.) Contrary to what it says, I couldn't find any illustrations of hook usage in the appendix. The Variables index only refers to four, and they're in other places. Perhaps the line about illustrating could be deleted, to avoid sending people on a search for something that isn't there? Best regards, libreville