Chapter 2. Writing a Module, Page 28

Location on the page: 
Paragraph after Figure 2-3
Chapter: 
2. Writing a Module
Error: 

If you're following along at home, you’ll need to clear the menu cache to see the link
appear. You can do this by truncating the cache_menu table...

Correction: 

If you're following along at home, you’ll need to rebuild the menu router table to see the link
appear. You can do this by visiting admin/build/modules...

Description of the Error: 

In Drupal 6, clearing the menu cache is no longer enough. You must rebuild the menu_router table to get new menu entries to appear. The menu_router table is rebuilt automatically when you visit admin/build/modules, or use the devel module to rebuild it.