Updated bundle IDs to com.mycompany.example instead of com.apple.example.

Updated for OS X v10.6: 64-bit, garbage collection, sudden termination. Added a section on wrapping long labels. Changed title from "Preference Panes" to "Preference Pane Programming Guide."

Fixed an incorrect instruction and replaced a duplicate graphic.

Added article on using new custom Help menu items.

Updated tabbed view screen shot in “The Preference Application” article.

Revision history was added to existing topic. It will be used to record changes to the content of the topic.