Page Chapter 2. Writing a Module, Page 21

Location on the page: 
Before "Further Steps"
Error: 

If a node is deleted its annotation is not, leading to wasted space in the DB. Deletion is a key feature, so even though this is an introductory chapter on writing a module I think it should be included. This feature is dealt with fully in Chapter 7, so the treatment in Chapter 2 could be brief and refer to Chapter 7 for more info.

Correction: 

A short section on deleting the annotation for a node when a node is deleted.

Description of the Error: 

Omission