Page Chapter 7. Working with Nodes, Page 93

Location on the page: 
3rd Paragraph
Error: 

This hook is only called for the current node type. For example, if the node type is joke, then joke_insert() would be called. If a new node of type book were added, joke_insert() would not be called (book_insert() would be called instead).

Correction: 

This hook is only called for the current module type. ...

Description of the Error: 

The information in this para is misleading, because it's ambiguous in its distinction between node and module namespaces. For example if a new node of type book were added to the joke module, joke_insert() would be called for the book node type.